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Finding the Third Proportional to 5,990 and 8,761

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Solution

The third proportional to 5,990 and 8,761 is: 12,813.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,990 : 8,761 = 8,761 : x
  2. Step 2: Convert to fraction form
    5,990/8,761 = 8,761/x
  3. Step 3: Cross multiply
    5,990x = 8,761 × 8,761
  4. Step 4: Simplify right side
    5,990x = 76,755,121
  5. Step 5: Solve for x
    x = 76,755,121/5,990
  6. Step 6: Final answer
    x = 12,813.88

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.