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Finding the Fourth Proportional to 8,474.58, 12,711.87 and 4,092.48

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Solution

The fourth proportional to 8,474.58, 12,711.87 and 4,092.48 is: 6,138.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.58 : 12,711.87 = 4,092.48 : x
  2. Step 2: Convert to fraction form
    8,474.58/12,711.87 = 4,092.48/x
  3. Step 3: Cross multiply
    8,474.58x = 12,711.87 × 4,092.48
  4. Step 4: Simplify right side
    8,474.58x = 52,023,073.74
  5. Step 5: Solve for x
    x = 52,023,073.74/8,474.58
  6. Step 6: Final answer
    x = 6,138.72

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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.