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Finding the Fourth Proportional to 91,757.16, 137,619.29 and 25,188.53

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Solution

The fourth proportional to 91,757.16, 137,619.29 and 25,188.53 is: 37,778.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,757.16 : 137,619.29 = 25,188.53 : x
  2. Step 2: Convert to fraction form
    91,757.16/137,619.29 = 25,188.53/x
  3. Step 3: Cross multiply
    91,757.16x = 137,619.29 × 25,188.53
  4. Step 4: Simplify right side
    91,757.16x = 3,466,426,800.70
  5. Step 5: Solve for x
    x = 3,466,426,800.70/91,757.16
  6. Step 6: Final answer
    x = 37,778.27

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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.