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Finding the Fourth Proportional to 8,878.56, 12,255.28 and 5,732.32

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Solution

The fourth proportional to 8,878.56, 12,255.28 and 5,732.32 is: 7,912.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.56 : 12,255.28 = 5,732.32 : x
  2. Step 2: Convert to fraction form
    8,878.56/12,255.28 = 5,732.32/x
  3. Step 3: Cross multiply
    8,878.56x = 12,255.28 × 5,732.32
  4. Step 4: Simplify right side
    8,878.56x = 70,251,186.65
  5. Step 5: Solve for x
    x = 70,251,186.65/8,878.56
  6. Step 6: Final answer
    x = 7,912.45

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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.