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Finding the Fourth Proportional to 91,163.87, 136,735.57 and 34,964.56

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Solution

The fourth proportional to 91,163.87, 136,735.57 and 34,964.56 is: 52,442.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,163.87 : 136,735.57 = 34,964.56 : x
  2. Step 2: Convert to fraction form
    91,163.87/136,735.57 = 34,964.56/x
  3. Step 3: Cross multiply
    91,163.87x = 136,735.57 × 34,964.56
  4. Step 4: Simplify right side
    91,163.87x = 4,780,898,612.15
  5. Step 5: Solve for x
    x = 4,780,898,612.15/91,163.87
  6. Step 6: Final answer
    x = 52,442.91

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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.