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Finding the Fourth Proportional to 33,754.80, 50,640.88 and 12,972.72

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Solution

The fourth proportional to 33,754.80, 50,640.88 and 12,972.72 is: 19,462.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,754.80 : 50,640.88 = 12,972.72 : x
  2. Step 2: Convert to fraction form
    33,754.80/50,640.88 = 12,972.72/x
  3. Step 3: Cross multiply
    33,754.80x = 50,640.88 × 12,972.72
  4. Step 4: Simplify right side
    33,754.80x = 656,949,956.79
  5. Step 5: Solve for x
    x = 656,949,956.79/33,754.80
  6. Step 6: Final answer
    x = 19,462.42

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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.