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Finding the Fourth Proportional to 91,129.78, 136,701.81 and 24,568.90

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Solution

The fourth proportional to 91,129.78, 136,701.81 and 24,568.90 is: 36,855.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,129.78 : 136,701.81 = 24,568.90 : x
  2. Step 2: Convert to fraction form
    91,129.78/136,701.81 = 24,568.90/x
  3. Step 3: Cross multiply
    91,129.78x = 136,701.81 × 24,568.90
  4. Step 4: Simplify right side
    91,129.78x = 3,358,612,757.95
  5. Step 5: Solve for x
    x = 3,358,612,757.95/91,129.78
  6. Step 6: Final answer
    x = 36,855.27

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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.