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Finding the Fourth Proportional to 133,569.28, 200,278.86 and 91,496.80

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Solution

The fourth proportional to 133,569.28, 200,278.86 and 91,496.80 is: 137,193.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,569.28 : 200,278.86 = 91,496.80 : x
  2. Step 2: Convert to fraction form
    133,569.28/200,278.86 = 91,496.80/x
  3. Step 3: Cross multiply
    133,569.28x = 200,278.86 × 91,496.80
  4. Step 4: Simplify right side
    133,569.28x = 18,324,874,797.65
  5. Step 5: Solve for x
    x = 18,324,874,797.65/133,569.28
  6. Step 6: Final answer
    x = 137,193.78

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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.