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Finding the Fourth Proportional to 91,568.28, 137,363.28 and 32,391.84

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Solution

The fourth proportional to 91,568.28, 137,363.28 and 32,391.84 is: 48,591.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,568.28 : 137,363.28 = 32,391.84 : x
  2. Step 2: Convert to fraction form
    91,568.28/137,363.28 = 32,391.84/x
  3. Step 3: Cross multiply
    91,568.28x = 137,363.28 × 32,391.84
  4. Step 4: Simplify right side
    91,568.28x = 4,449,449,387.64
  5. Step 5: Solve for x
    x = 4,449,449,387.64/91,568.28
  6. Step 6: Final answer
    x = 48,591.60

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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.