Determine 4181

Determine the fourth GP member if q = 4 and a1 + a3 = 5.44

Correct answer:

a4 =  20.48

Step-by-step explanation:

q=4 a1+a3=5.44 a1+a1 q2 = 5.44 a + 42 a = 5.44 a1=5.44/(1+q2)=5.44/(1+42)=258=0.32 a4=a1 q3=0.32 43=20.48



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