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Finding the Fourth Proportional to 482,700.42, 724,167.68 and 145,720.95

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Solution

The fourth proportional to 482,700.42, 724,167.68 and 145,720.95 is: 218,616.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,700.42 : 724,167.68 = 145,720.95 : x
  2. Step 2: Convert to fraction form
    482,700.42/724,167.68 = 145,720.95/x
  3. Step 3: Cross multiply
    482,700.42x = 724,167.68 × 145,720.95
  4. Step 4: Simplify right side
    482,700.42x = 105,526,402,288.90
  5. Step 5: Solve for x
    x = 105,526,402,288.90/482,700.42
  6. Step 6: Final answer
    x = 218,616.76

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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.