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Finding the Fourth Proportional to 218,387.28, 327,661.02 and 92,059.32

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Solution

The fourth proportional to 218,387.28, 327,661.02 and 92,059.32 is: 138,122.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,387.28 : 327,661.02 = 92,059.32 : x
  2. Step 2: Convert to fraction form
    218,387.28/327,661.02 = 92,059.32/x
  3. Step 3: Cross multiply
    218,387.28x = 327,661.02 × 92,059.32
  4. Step 4: Simplify right side
    218,387.28x = 30,164,250,691.71
  5. Step 5: Solve for x
    x = 30,164,250,691.71/218,387.28
  6. Step 6: Final answer
    x = 138,122.75

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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.