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Finding the Fourth Proportional to 8,722.52, 12,015.60 and 8,277.92

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Solution

The fourth proportional to 8,722.52, 12,015.60 and 8,277.92 is: 11,403.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.52 : 12,015.60 = 8,277.92 : x
  2. Step 2: Convert to fraction form
    8,722.52/12,015.60 = 8,277.92/x
  3. Step 3: Cross multiply
    8,722.52x = 12,015.60 × 8,277.92
  4. Step 4: Simplify right side
    8,722.52x = 99,464,175.55
  5. Step 5: Solve for x
    x = 99,464,175.55/8,722.52
  6. Step 6: Final answer
    x = 11,403.15

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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.