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Finding the Fourth Proportional to 66,253.92, 99,419.76 and 47,513.76

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Solution

The fourth proportional to 66,253.92, 99,419.76 and 47,513.76 is: 71,298.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,253.92 : 99,419.76 = 47,513.76 : x
  2. Step 2: Convert to fraction form
    66,253.92/99,419.76 = 47,513.76/x
  3. Step 3: Cross multiply
    66,253.92x = 99,419.76 × 47,513.76
  4. Step 4: Simplify right side
    66,253.92x = 4,723,806,615.90
  5. Step 5: Solve for x
    x = 4,723,806,615.90/66,253.92
  6. Step 6: Final answer
    x = 71,298.52

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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.