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Finding the Fourth Proportional to 91,874.52, 137,811.74 and 25,315.29

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Solution

The fourth proportional to 91,874.52, 137,811.74 and 25,315.29 is: 37,972.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,874.52 : 137,811.74 = 25,315.29 : x
  2. Step 2: Convert to fraction form
    91,874.52/137,811.74 = 25,315.29/x
  3. Step 3: Cross multiply
    91,874.52x = 137,811.74 × 25,315.29
  4. Step 4: Simplify right side
    91,874.52x = 3,488,744,036.93
  5. Step 5: Solve for x
    x = 3,488,744,036.93/91,874.52
  6. Step 6: Final answer
    x = 37,972.92

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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.