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Finding the Fourth Proportional to 61,066.71, 91,472.49 and 38,769.84

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Solution

The fourth proportional to 61,066.71, 91,472.49 and 38,769.84 is: 58,073.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,066.71 : 91,472.49 = 38,769.84 : x
  2. Step 2: Convert to fraction form
    61,066.71/91,472.49 = 38,769.84/x
  3. Step 3: Cross multiply
    61,066.71x = 91,472.49 × 38,769.84
  4. Step 4: Simplify right side
    61,066.71x = 3,546,373,801.70
  5. Step 5: Solve for x
    x = 3,546,373,801.70/61,066.71
  6. Step 6: Final answer
    x = 58,073.77

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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.