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Finding the Fourth Proportional to 225,011.54, 337,517.65 and 91,891.81

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Solution

The fourth proportional to 225,011.54, 337,517.65 and 91,891.81 is: 137,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,011.54 : 337,517.65 = 91,891.81 : x
  2. Step 2: Convert to fraction form
    225,011.54/337,517.65 = 91,891.81/x
  3. Step 3: Cross multiply
    225,011.54x = 337,517.65 × 91,891.81
  4. Step 4: Simplify right side
    225,011.54x = 31,015,106,691.92
  5. Step 5: Solve for x
    x = 31,015,106,691.92/225,011.54
  6. Step 6: Final answer
    x = 137,837.85

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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.