What cesar is trying to say and i would agree is this.....If the content is relevant to everyone then don't create three pages with the same content as this is "duplicate content"
If you are targeting different countries that don't speak English then simply use "ccTLD". Other wise it doesn't really matter where your site is. You can also geo target your site in webmaster tools and it will show your page in you area and country more, yet it is still not limited to that.
Lastly your content doesn't seem to have a need to include keywords like "australia" or "city name" other than to say where you are from which can be done in the footer. Including those keywords come in big for local services or restaurants or things of that nature.
If the content is general then I advise you to do these things:
- Geo target your site in webmaster tools
- Add you location to your footer (as detailed as you want to get)
- Link to other relevant sites in your country or city
- And Let google bing an yahoo do the rest.
- Oh and delete the extra pages!
If it is a local service (i just now looked at your site!) do this:
- Again Delete the extra pages
- Geo target your site is webmaster tools
- Link to relevant sites
- and include location based keywords to content
- Again let the search engines do the rest
Otherwise you are simply creating dup content and making things much harder on yourself. It really is that simply. Once you get started with that and fix the duplicate content issues moz web app will show you other areas to improve if you have any.
Happy SEOing!