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Finding the Fourth Proportional to 16,981.42, 25,458.90 and 8,092.12

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Solution

The fourth proportional to 16,981.42, 25,458.90 and 8,092.12 is: 12,131.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,981.42 : 25,458.90 = 8,092.12 : x
  2. Step 2: Convert to fraction form
    16,981.42/25,458.90 = 8,092.12/x
  3. Step 3: Cross multiply
    16,981.42x = 25,458.90 × 8,092.12
  4. Step 4: Simplify right side
    16,981.42x = 206,016,473.87
  5. Step 5: Solve for x
    x = 206,016,473.87/16,981.42
  6. Step 6: Final answer
    x = 12,131.88

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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.