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Finding the Fourth Proportional to 15,049.88, 20,769.56 and 8,677.44

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Solution

The fourth proportional to 15,049.88, 20,769.56 and 8,677.44 is: 11,975.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,049.88 : 20,769.56 = 8,677.44 : x
  2. Step 2: Convert to fraction form
    15,049.88/20,769.56 = 8,677.44/x
  3. Step 3: Cross multiply
    15,049.88x = 20,769.56 × 8,677.44
  4. Step 4: Simplify right side
    15,049.88x = 180,226,610.73
  5. Step 5: Solve for x
    x = 180,226,610.73/15,049.88
  6. Step 6: Final answer
    x = 11,975.29

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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.