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Finding the Fourth Proportional to 418,315.62, 627,488.14 and 134,014.80

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Solution

The fourth proportional to 418,315.62, 627,488.14 and 134,014.80 is: 201,026.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,315.62 : 627,488.14 = 134,014.80 : x
  2. Step 2: Convert to fraction form
    418,315.62/627,488.14 = 134,014.80/x
  3. Step 3: Cross multiply
    418,315.62x = 627,488.14 × 134,014.80
  4. Step 4: Simplify right side
    418,315.62x = 84,092,697,584.47
  5. Step 5: Solve for x
    x = 84,092,697,584.47/418,315.62
  6. Step 6: Final answer
    x = 201,026.91

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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.