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Finding the Fourth Proportional to 8,972.16, 12,376.32 and 5,245.44

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Solution

The fourth proportional to 8,972.16, 12,376.32 and 5,245.44 is: 7,235.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.16 : 12,376.32 = 5,245.44 : x
  2. Step 2: Convert to fraction form
    8,972.16/12,376.32 = 5,245.44/x
  3. Step 3: Cross multiply
    8,972.16x = 12,376.32 × 5,245.44
  4. Step 4: Simplify right side
    8,972.16x = 64,919,243.98
  5. Step 5: Solve for x
    x = 64,919,243.98/8,972.16
  6. Step 6: Final answer
    x = 7,235.63

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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.