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Finding the Fourth Proportional to 218,268.40, 327,229.80 and 119,772.40

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Solution

The fourth proportional to 218,268.40, 327,229.80 and 119,772.40 is: 179,563.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,268.40 : 327,229.80 = 119,772.40 : x
  2. Step 2: Convert to fraction form
    218,268.40/327,229.80 = 119,772.40/x
  3. Step 3: Cross multiply
    218,268.40x = 327,229.80 × 119,772.40
  4. Step 4: Simplify right side
    218,268.40x = 39,193,098,497.52
  5. Step 5: Solve for x
    x = 39,193,098,497.52/218,268.40
  6. Step 6: Final answer
    x = 179,563.78

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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.