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Finding the Fourth Proportional to 73,988.92, 110,699.40 and 42,414.12

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Solution

The fourth proportional to 73,988.92, 110,699.40 and 42,414.12 is: 63,458.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,988.92 : 110,699.40 = 42,414.12 : x
  2. Step 2: Convert to fraction form
    73,988.92/110,699.40 = 42,414.12/x
  3. Step 3: Cross multiply
    73,988.92x = 110,699.40 × 42,414.12
  4. Step 4: Simplify right side
    73,988.92x = 4,695,217,635.53
  5. Step 5: Solve for x
    x = 4,695,217,635.53/73,988.92
  6. Step 6: Final answer
    x = 63,458.39

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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.