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Finding the Fourth Proportional to 71,374.92, 98,451.72 and 45,872.61

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Solution

The fourth proportional to 71,374.92, 98,451.72 and 45,872.61 is: 63,274.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,374.92 : 98,451.72 = 45,872.61 : x
  2. Step 2: Convert to fraction form
    71,374.92/98,451.72 = 45,872.61/x
  3. Step 3: Cross multiply
    71,374.92x = 98,451.72 × 45,872.61
  4. Step 4: Simplify right side
    71,374.92x = 4,516,237,355.39
  5. Step 5: Solve for x
    x = 4,516,237,355.39/71,374.92
  6. Step 6: Final answer
    x = 63,274.85

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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.