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Finding the Fourth Proportional to 91,174.77, 125,873.87 and 69,494.31

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Solution

The fourth proportional to 91,174.77, 125,873.87 and 69,494.31 is: 95,942.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,174.77 : 125,873.87 = 69,494.31 : x
  2. Step 2: Convert to fraction form
    91,174.77/125,873.87 = 69,494.31/x
  3. Step 3: Cross multiply
    91,174.77x = 125,873.87 × 69,494.31
  4. Step 4: Simplify right side
    91,174.77x = 8,747,517,395.21
  5. Step 5: Solve for x
    x = 8,747,517,395.21/91,174.77
  6. Step 6: Final answer
    x = 95,942.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.