find the mean proportion of the following (i) 5,20
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a/x = x/r, where a and r are two different numbers.
so the mean proportion of 5 and 20 is
5/x = x/20. just cross multiply and get 100 = x^2, which makes x = 10. 1
10 is the mean proportional.
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10. 10. 10. 10. 10. 10. 10
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