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Finding the Fourth Proportional to 33,787.20, 50,711.80 and 17,158.80

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Solution

The fourth proportional to 33,787.20, 50,711.80 and 17,158.80 is: 25,753.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,787.20 : 50,711.80 = 17,158.80 : x
  2. Step 2: Convert to fraction form
    33,787.20/50,711.80 = 17,158.80/x
  3. Step 3: Cross multiply
    33,787.20x = 50,711.80 × 17,158.80
  4. Step 4: Simplify right side
    33,787.20x = 870,153,633.84
  5. Step 5: Solve for x
    x = 870,153,633.84/33,787.20
  6. Step 6: Final answer
    x = 25,753.94

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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.