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Finding the Fourth Proportional to 482,936.80, 724,372.80 and 127,943.20

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Solution

The fourth proportional to 482,936.80, 724,372.80 and 127,943.20 is: 191,906.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,936.80 : 724,372.80 = 127,943.20 : x
  2. Step 2: Convert to fraction form
    482,936.80/724,372.80 = 127,943.20/x
  3. Step 3: Cross multiply
    482,936.80x = 724,372.80 × 127,943.20
  4. Step 4: Simplify right side
    482,936.80x = 92,678,574,024.96
  5. Step 5: Solve for x
    x = 92,678,574,024.96/482,936.80
  6. Step 6: Final answer
    x = 191,906.22

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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.