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Finding the Third Proportional to 2,669 and 3,113

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Solution

The third proportional to 2,669 and 3,113 is: 3,630.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669 : 3,113 = 3,113 : x
  2. Step 2: Convert to fraction form
    2,669/3,113 = 3,113/x
  3. Step 3: Cross multiply
    2,669x = 3,113 × 3,113
  4. Step 4: Simplify right side
    2,669x = 9,690,769
  5. Step 5: Solve for x
    x = 9,690,769/2,669
  6. Step 6: Final answer
    x = 3,630.86

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Why These Related Problems?

These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.