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Finding the Fourth Proportional to 91,793.20, 137,681.70 and 25,227.40

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Solution

The fourth proportional to 91,793.20, 137,681.70 and 25,227.40 is: 37,838.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,793.20 : 137,681.70 = 25,227.40 : x
  2. Step 2: Convert to fraction form
    91,793.20/137,681.70 = 25,227.40/x
  3. Step 3: Cross multiply
    91,793.20x = 137,681.70 × 25,227.40
  4. Step 4: Simplify right side
    91,793.20x = 3,473,351,318.58
  5. Step 5: Solve for x
    x = 3,473,351,318.58/91,793.20
  6. Step 6: Final answer
    x = 37,838.87

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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.