I am reading through the 4 links you provided at the bottom of your post and I see that I can join two tables together with this:
http://code.google.com/apis/chart/interactive/docs/reference.html#google_visualization_data_join and I can write a query with arithmetic operators. Sweet! This looks like a great solution: I will put the data into several fusion tables and then on client side java script I will write some code to join tables as needed and chart the results. It isn't a problem if my fusion tables are about 2500x10 in size, are they? That should be well under the size limit. Thank you!! -Jim
