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Finding the Fourth Proportional to 8,375.78, 12,563.67 and 4,672.46

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Solution

The fourth proportional to 8,375.78, 12,563.67 and 4,672.46 is: 7,008.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,375.78 : 12,563.67 = 4,672.46 : x
  2. Step 2: Convert to fraction form
    8,375.78/12,563.67 = 4,672.46/x
  3. Step 3: Cross multiply
    8,375.78x = 12,563.67 × 4,672.46
  4. Step 4: Simplify right side
    8,375.78x = 58,703,245.53
  5. Step 5: Solve for x
    x = 58,703,245.53/8,375.78
  6. Step 6: Final answer
    x = 7,008.69

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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.