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Finding the Fourth Proportional to 482,757.50, 724,171.78 and 127,769.12

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Solution

The fourth proportional to 482,757.50, 724,171.78 and 127,769.12 is: 191,663.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,757.50 : 724,171.78 = 127,769.12 : x
  2. Step 2: Convert to fraction form
    482,757.50/724,171.78 = 127,769.12/x
  3. Step 3: Cross multiply
    482,757.50x = 724,171.78 × 127,769.12
  4. Step 4: Simplify right side
    482,757.50x = 92,526,791,059.43
  5. Step 5: Solve for x
    x = 92,526,791,059.43/482,757.50
  6. Step 6: Final answer
    x = 191,663.08

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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.