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Finding the Fourth Proportional to 418,251.73, 627,376.33 and 118,732.57

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Solution

The fourth proportional to 418,251.73, 627,376.33 and 118,732.57 is: 178,098.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,251.73 : 627,376.33 = 118,732.57 : x
  2. Step 2: Convert to fraction form
    418,251.73/627,376.33 = 118,732.57/x
  3. Step 3: Cross multiply
    418,251.73x = 627,376.33 × 118,732.57
  4. Step 4: Simplify right side
    418,251.73x = 74,490,004,018.07
  5. Step 5: Solve for x
    x = 74,490,004,018.07/418,251.73
  6. Step 6: Final answer
    x = 178,098.50

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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.