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Finding the Fourth Proportional to 16,615.55, 24,928.03 and 6,761.90

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Solution

The fourth proportional to 16,615.55, 24,928.03 and 6,761.90 is: 10,144.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,615.55 : 24,928.03 = 6,761.90 : x
  2. Step 2: Convert to fraction form
    16,615.55/24,928.03 = 6,761.90/x
  3. Step 3: Cross multiply
    16,615.55x = 24,928.03 × 6,761.90
  4. Step 4: Simplify right side
    16,615.55x = 168,560,687.61
  5. Step 5: Solve for x
    x = 168,560,687.61/16,615.55
  6. Step 6: Final answer
    x = 10,144.76

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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.