Question

what is the 4th proportion of 3hrs12mins,24mins,1m68cm

Answer 1

First convert hrs to mins and m to cm.
⇒3hrs12mins=(3*60+12)=192mins.
⇒1m68cm=168cm.

∴ 192:24::168:x.(let)
⇒192/24=168/x.
Solving, we get, x=21.(Ans.)

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