b1=16/27
b2=b1q
b3=b1q^2
b4=b1q^3
b5=b1q^4=3
b5/b1=q^4=3/(16/27)=81/16
q=3/2
b2=(16/27)*(3/2)=8/9
b3=b2*q=(8/9)(3/2)=4/3
b4=b3*3/2=(4/3)*(3/2)=2
b5=b4*3/2=2*3/2=3
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b1=16/27
b2=b1q
b3=b1q^2
b4=b1q^3
b5=b1q^4=3
b5/b1=q^4=3/(16/27)=81/16
q=3/2
b2=(16/27)*(3/2)=8/9
b3=b2*q=(8/9)(3/2)=4/3
b4=b3*3/2=(4/3)*(3/2)=2
b5=b4*3/2=2*3/2=3