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Finding the Fourth Proportional to 26,049.36, 39,078.88 and 8,520.12

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Solution

The fourth proportional to 26,049.36, 39,078.88 and 8,520.12 is: 12,781.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,049.36 : 39,078.88 = 8,520.12 : x
  2. Step 2: Convert to fraction form
    26,049.36/39,078.88 = 8,520.12/x
  3. Step 3: Cross multiply
    26,049.36x = 39,078.88 × 8,520.12
  4. Step 4: Simplify right side
    26,049.36x = 332,956,747.07
  5. Step 5: Solve for x
    x = 332,956,747.07/26,049.36
  6. Step 6: Final answer
    x = 12,781.76

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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.