Different information in Analytics vs Reports

I am a beginner Analytics user. I've taken a bunch of the online Analytics courses and am trying to improve my skills. One of the main issues I have with analytics is my dashboard showing different information than my reports.

For example I am pulling a Fund Activity Report with the only filter as "appeal" for a particular appeal. When I do that I get a total of $41,477.97

However, when I set up my dashboard (contribution cube) with the same filtered appeal with no other filters and add a widget for "contribution amount" I'm getting a significantly lower number $23,903

When I use the finance cube I get an even lower amount $20,119.63

I've done a bunch of playing around and making sure no other filters are present. I cannot figure out why my Fund Activity report has the correct amount for this Appeal but I cannot get a dashboard to reflect that amount. 

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