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Finding the Fourth Proportional to 18,676, 25,773.20 and 12,063.52

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Solution

The fourth proportional to 18,676, 25,773.20 and 12,063.52 is: 16,647.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,676 : 25,773.20 = 12,063.52 : x
  2. Step 2: Convert to fraction form
    18,676/25,773.20 = 12,063.52/x
  3. Step 3: Cross multiply
    18,676x = 25,773.20 × 12,063.52
  4. Step 4: Simplify right side
    18,676x = 310,915,513.66
  5. Step 5: Solve for x
    x = 310,915,513.66/18,676
  6. Step 6: Final answer
    x = 16,647.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.