Finding the Fourth Proportional to 28,634,965, 39,516,258.18 and 15,757,909
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Solution
The fourth proportional to 28,634,965, 39,516,258.18 and 15,757,909 is: 21,745,917.99
Step by Step Solution
- Step 1: Write the proportion equation
28,634,965 : 39,516,258.18 = 15,757,909 : x - Step 2: Convert to fraction form
28,634,965/39,516,258.18 = 15,757,909/x - Step 3: Cross multiply
28,634,965x = 39,516,258.18 × 15,757,909 - Step 4: Simplify right side
28,634,965x = 622,693,600,420,945.62 - Step 5: Solve for x
x = 622,693,600,420,945.62/28,634,965 - Step 6: Final answer
x = 21,745,917.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.