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Finding the Fourth Proportional to 8,039.74, 12,043.92 and 5,540.48

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Solution

The fourth proportional to 8,039.74, 12,043.92 and 5,540.48 is: 8,299.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,039.74 : 12,043.92 = 5,540.48 : x
  2. Step 2: Convert to fraction form
    8,039.74/12,043.92 = 5,540.48/x
  3. Step 3: Cross multiply
    8,039.74x = 12,043.92 × 5,540.48
  4. Step 4: Simplify right side
    8,039.74x = 66,729,097.88
  5. Step 5: Solve for x
    x = 66,729,097.88/8,039.74
  6. Step 6: Final answer
    x = 8,299.91

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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.