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Finding the Fourth Proportional to 61,470.72, 91,972.72 and 38,039.04

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Solution

The fourth proportional to 61,470.72, 91,972.72 and 38,039.04 is: 56,914.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,470.72 : 91,972.72 = 38,039.04 : x
  2. Step 2: Convert to fraction form
    61,470.72/91,972.72 = 38,039.04/x
  3. Step 3: Cross multiply
    61,470.72x = 91,972.72 × 38,039.04
  4. Step 4: Simplify right side
    61,470.72x = 3,498,553,974.99
  5. Step 5: Solve for x
    x = 3,498,553,974.99/61,470.72
  6. Step 6: Final answer
    x = 56,914.15

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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.