Different page ranks for pages with different links

My site is getting different page ranks for each page with different URL's

for example:

Bluepearl Design - Professional Web Design has a pagerank of 4
Bluepearl Design - Professional Web Design PR of 3

Bluepearl Design PR of 0
Bluepearl Design PR of 3

Is there a way i can change my incoming links to goto the same URL.

for example
bluepearl-design.com/forums/
Bluepearl Design
Bluepearl Design

All automatically point to:

Bluepearl Design

Thanks for any help

Hello Sean ,

Please enable Force Forum Root as Homepage? setting in vBSEO Control Panel. This will prevent the PR leakage

Thanks for that, worked for the forums perfectly

Is there a way i can also do this for my site which is below the directory /forums/

im gettinf different page ranks for both:

Bluepearl Design - Professional Web Design and Bluepearl Design - Professional Web Design

Thanks again