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Finding the Fourth Proportional to 8,251.88, 12,379.64 and 3,057.75

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Solution

The fourth proportional to 8,251.88, 12,379.64 and 3,057.75 is: 4,587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,251.88 : 12,379.64 = 3,057.75 : x
  2. Step 2: Convert to fraction form
    8,251.88/12,379.64 = 3,057.75/x
  3. Step 3: Cross multiply
    8,251.88x = 12,379.64 × 3,057.75
  4. Step 4: Simplify right side
    8,251.88x = 37,853,828.92
  5. Step 5: Solve for x
    x = 37,853,828.92/8,251.88
  6. Step 6: Final answer
    x = 4,587.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.