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Finding the Fourth Proportional to 91,791.90, 137,691.23 and 25,237.23

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Solution

The fourth proportional to 91,791.90, 137,691.23 and 25,237.23 is: 37,856.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,791.90 : 137,691.23 = 25,237.23 : x
  2. Step 2: Convert to fraction form
    91,791.90/137,691.23 = 25,237.23/x
  3. Step 3: Cross multiply
    91,791.90x = 137,691.23 × 25,237.23
  4. Step 4: Simplify right side
    91,791.90x = 3,474,945,114.31
  5. Step 5: Solve for x
    x = 3,474,945,114.31/91,791.90
  6. Step 6: Final answer
    x = 37,856.77

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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.