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Finding the Fourth Proportional to 64,381,951.31, 96,572,951.56 and 15,860,748.31

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Solution

The fourth proportional to 64,381,951.31, 96,572,951.56 and 15,860,748.31 is: 23,791,128.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,381,951.31 : 96,572,951.56 = 15,860,748.31 : x
  2. Step 2: Convert to fraction form
    64,381,951.31/96,572,951.56 = 15,860,748.31/x
  3. Step 3: Cross multiply
    64,381,951.31x = 96,572,951.56 × 15,860,748.31
  4. Step 4: Simplify right side
    64,381,951.31x = 1,531,719,278,025,375.25
  5. Step 5: Solve for x
    x = 1,531,719,278,025,375.25/64,381,951.31
  6. Step 6: Final answer
    x = 23,791,128.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.