compare 1.8✖10^15:1.5✖10^20 exposional form
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1.8 x 1015 : 1.5 X 1020
= 1.8 x 1015 = 1827
= 1.5 X 1020 = 1530
1.8 x 1015 : 1.5 X 1020
= 1827 : 1530
= 39 : 510
= 13 : 170
Is the ratio.
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