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Finding the Fourth Proportional to 316,553.04, 474,854.13 and 91,917.15

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Solution

The fourth proportional to 316,553.04, 474,854.13 and 91,917.15 is: 137,882.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,553.04 : 474,854.13 = 91,917.15 : x
  2. Step 2: Convert to fraction form
    316,553.04/474,854.13 = 91,917.15/x
  3. Step 3: Cross multiply
    316,553.04x = 474,854.13 × 91,917.15
  4. Step 4: Simplify right side
    316,553.04x = 43,647,238,295.33
  5. Step 5: Solve for x
    x = 43,647,238,295.33/316,553.04
  6. Step 6: Final answer
    x = 137,882.86

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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.