One .resharper Shared Solution for Multiple Solutions?

I have a situation where there is one master solution file and about five
solutions for working in specific parts of the system. So I have:

ACM.sln
ACM.resharper (with all my settings)

ImportExport.sln
UserInterface.sln
Backend.sln

How would I get the ACM.resharper settings in the other solutions without
having to manage four files?

Thanks,
Michael Hedgpeth