a:b=2/9:1/3 ,,b:c =2/7:5/14,,d:c=7/10:3/5 ......a:b:c:d=?
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Answer:2:3:6:7
Step-by-step explanation:
a:b=2/9:1/3
=2/3:1
=2:3
b:c=2/7:5/14
=2:5/2
= 4:5
d:c=7/10:3/5
=7/2:3
=7:6
c:d=6:7
a:b:c:d=2:3:6:7
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