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Finding the Fourth Proportional to 92,399.60, 138,578.21 and 25,844.43

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Solution

The fourth proportional to 92,399.60, 138,578.21 and 25,844.43 is: 38,760.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,399.60 : 138,578.21 = 25,844.43 : x
  2. Step 2: Convert to fraction form
    92,399.60/138,578.21 = 25,844.43/x
  3. Step 3: Cross multiply
    92,399.60x = 138,578.21 × 25,844.43
  4. Step 4: Simplify right side
    92,399.60x = 3,581,474,718.65
  5. Step 5: Solve for x
    x = 3,581,474,718.65/92,399.60
  6. Step 6: Final answer
    x = 38,760.72

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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.