Pls solve question no. 6.
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Answer:
the answer is very simple
Step-by-step explanation:
given
a+c=2b
c=2b-a
1/b-1/d=2/c
b+d/db=2/c
c(b+d)=2bd
(2b-a)(b+d)=2db
2b(b+d)-a(b+d)=2bd
2b*b+2bd-ab+ad=2bd
2b*b-ab+ad=0
2b*b-a(b+d)=0
according to proportionality constant we get
a:b::c:d
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