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Finding the Fourth Proportional to 91,766.79, 137,650.05 and 25,207.20

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Solution

The fourth proportional to 91,766.79, 137,650.05 and 25,207.20 is: 37,810.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,766.79 : 137,650.05 = 25,207.20 : x
  2. Step 2: Convert to fraction form
    91,766.79/137,650.05 = 25,207.20/x
  3. Step 3: Cross multiply
    91,766.79x = 137,650.05 × 25,207.20
  4. Step 4: Simplify right side
    91,766.79x = 3,469,772,340.36
  5. Step 5: Solve for x
    x = 3,469,772,340.36/91,766.79
  6. Step 6: Final answer
    x = 37,810.76

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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.