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Finding the Fourth Proportional to 8,524.70, 12,787.05 and 2,976.56

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Solution

The fourth proportional to 8,524.70, 12,787.05 and 2,976.56 is: 4,464.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,524.70 : 12,787.05 = 2,976.56 : x
  2. Step 2: Convert to fraction form
    8,524.70/12,787.05 = 2,976.56/x
  3. Step 3: Cross multiply
    8,524.70x = 12,787.05 × 2,976.56
  4. Step 4: Simplify right side
    8,524.70x = 38,061,357.61
  5. Step 5: Solve for x
    x = 38,061,357.61/8,524.70
  6. Step 6: Final answer
    x = 4,464.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.