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Finding the Fourth Proportional to 66,463.87, 91,668.28 and 42,592.76

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Solution

The fourth proportional to 66,463.87, 91,668.28 and 42,592.76 is: 58,744.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,463.87 : 91,668.28 = 42,592.76 : x
  2. Step 2: Convert to fraction form
    66,463.87/91,668.28 = 42,592.76/x
  3. Step 3: Cross multiply
    66,463.87x = 91,668.28 × 42,592.76
  4. Step 4: Simplify right side
    66,463.87x = 3,904,404,836.69
  5. Step 5: Solve for x
    x = 3,904,404,836.69/66,463.87
  6. Step 6: Final answer
    x = 58,744.78

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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.