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Finding the Fourth Proportional to 8,269.74, 11,403.81 and 7,078.68

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Solution

The fourth proportional to 8,269.74, 11,403.81 and 7,078.68 is: 9,761.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,269.74 : 11,403.81 = 7,078.68 : x
  2. Step 2: Convert to fraction form
    8,269.74/11,403.81 = 7,078.68/x
  3. Step 3: Cross multiply
    8,269.74x = 11,403.81 × 7,078.68
  4. Step 4: Simplify right side
    8,269.74x = 80,723,921.77
  5. Step 5: Solve for x
    x = 80,723,921.77/8,269.74
  6. Step 6: Final answer
    x = 9,761.36

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.