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Finding the Fourth Proportional to 367,642.78, 551,520.18 and 187,629.90

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Solution

The fourth proportional to 367,642.78, 551,520.18 and 187,629.90 is: 281,473.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,642.78 : 551,520.18 = 187,629.90 : x
  2. Step 2: Convert to fraction form
    367,642.78/551,520.18 = 187,629.90/x
  3. Step 3: Cross multiply
    367,642.78x = 551,520.18 × 187,629.90
  4. Step 4: Simplify right side
    367,642.78x = 103,481,676,221.38
  5. Step 5: Solve for x
    x = 103,481,676,221.38/367,642.78
  6. Step 6: Final answer
    x = 281,473.44

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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.