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Finding the Fourth Proportional to 418,766.25, 627,843.14 and 134,294.88

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Solution

The fourth proportional to 418,766.25, 627,843.14 and 134,294.88 is: 201,344.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,766.25 : 627,843.14 = 134,294.88 : x
  2. Step 2: Convert to fraction form
    418,766.25/627,843.14 = 134,294.88/x
  3. Step 3: Cross multiply
    418,766.25x = 627,843.14 × 134,294.88
  4. Step 4: Simplify right side
    418,766.25x = 84,316,119,785.38
  5. Step 5: Solve for x
    x = 84,316,119,785.38/418,766.25
  6. Step 6: Final answer
    x = 201,344.11

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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.