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Finding the Fourth Proportional to 91,606.56, 137,230.92 and 63,138.42

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Solution

The fourth proportional to 91,606.56, 137,230.92 and 63,138.42 is: 94,584.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,606.56 : 137,230.92 = 63,138.42 : x
  2. Step 2: Convert to fraction form
    91,606.56/137,230.92 = 63,138.42/x
  3. Step 3: Cross multiply
    91,606.56x = 137,230.92 × 63,138.42
  4. Step 4: Simplify right side
    91,606.56x = 8,664,543,463.95
  5. Step 5: Solve for x
    x = 8,664,543,463.95/91,606.56
  6. Step 6: Final answer
    x = 94,584.31

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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.