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Finding the Fourth Proportional to 266,546.20, 399,624.90 and 108,693.40

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Solution

The fourth proportional to 266,546.20, 399,624.90 and 108,693.40 is: 162,960.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,546.20 : 399,624.90 = 108,693.40 : x
  2. Step 2: Convert to fraction form
    266,546.20/399,624.90 = 108,693.40/x
  3. Step 3: Cross multiply
    266,546.20x = 399,624.90 × 108,693.40
  4. Step 4: Simplify right side
    266,546.20x = 43,436,589,105.66
  5. Step 5: Solve for x
    x = 43,436,589,105.66/266,546.20
  6. Step 6: Final answer
    x = 162,960.83

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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.