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Finding the Fourth Proportional to 418,317.62, 627,491.14 and 134,016.80

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Solution

The fourth proportional to 418,317.62, 627,491.14 and 134,016.80 is: 201,029.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,317.62 : 627,491.14 = 134,016.80 : x
  2. Step 2: Convert to fraction form
    418,317.62/627,491.14 = 134,016.80/x
  3. Step 3: Cross multiply
    418,317.62x = 627,491.14 × 134,016.80
  4. Step 4: Simplify right side
    418,317.62x = 84,094,354,611.15
  5. Step 5: Solve for x
    x = 84,094,354,611.15/418,317.62
  6. Step 6: Final answer
    x = 201,029.91

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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.