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Finding the Fourth Proportional to 10,892.70, 16,344.52 and 8,124.92

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Solution

The fourth proportional to 10,892.70, 16,344.52 and 8,124.92 is: 12,191.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,892.70 : 16,344.52 = 8,124.92 : x
  2. Step 2: Convert to fraction form
    10,892.70/16,344.52 = 8,124.92/x
  3. Step 3: Cross multiply
    10,892.70x = 16,344.52 × 8,124.92
  4. Step 4: Simplify right side
    10,892.70x = 132,797,917.44
  5. Step 5: Solve for x
    x = 132,797,917.44/10,892.70
  6. Step 6: Final answer
    x = 12,191.46

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1.5x scale

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.