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Finding the Fourth Proportional to 16,791.30, 25,189.99 and 8,471.59

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Solution

The fourth proportional to 16,791.30, 25,189.99 and 8,471.59 is: 12,708.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,791.30 : 25,189.99 = 8,471.59 : x
  2. Step 2: Convert to fraction form
    16,791.30/25,189.99 = 8,471.59/x
  3. Step 3: Cross multiply
    16,791.30x = 25,189.99 × 8,471.59
  4. Step 4: Simplify right side
    16,791.30x = 213,399,183.23
  5. Step 5: Solve for x
    x = 213,399,183.23/16,791.30
  6. Step 6: Final answer
    x = 12,708.91

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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.