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Finding the Fourth Proportional to 18,043.78, 24,891.96 and 10,965.46

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Solution

The fourth proportional to 18,043.78, 24,891.96 and 10,965.46 is: 15,127.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,043.78 : 24,891.96 = 10,965.46 : x
  2. Step 2: Convert to fraction form
    18,043.78/24,891.96 = 10,965.46/x
  3. Step 3: Cross multiply
    18,043.78x = 24,891.96 × 10,965.46
  4. Step 4: Simplify right side
    18,043.78x = 272,951,791.70
  5. Step 5: Solve for x
    x = 272,951,791.70/18,043.78
  6. Step 6: Final answer
    x = 15,127.20

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1.5x scale

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.