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Finding the Fourth Proportional to 7,896.64, 11,847.68 and 3,517.12

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Solution

The fourth proportional to 7,896.64, 11,847.68 and 3,517.12 is: 5,276.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,896.64 : 11,847.68 = 3,517.12 : x
  2. Step 2: Convert to fraction form
    7,896.64/11,847.68 = 3,517.12/x
  3. Step 3: Cross multiply
    7,896.64x = 11,847.68 × 3,517.12
  4. Step 4: Simplify right side
    7,896.64x = 41,669,712.28
  5. Step 5: Solve for x
    x = 41,669,712.28/7,896.64
  6. Step 6: Final answer
    x = 5,276.89

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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.