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Finding the Third Proportional to 2,617 and 3,910

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Solution

The third proportional to 2,617 and 3,910 is: 5,841.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617 : 3,910 = 3,910 : x
  2. Step 2: Convert to fraction form
    2,617/3,910 = 3,910/x
  3. Step 3: Cross multiply
    2,617x = 3,910 × 3,910
  4. Step 4: Simplify right side
    2,617x = 15,288,100
  5. Step 5: Solve for x
    x = 15,288,100/2,617
  6. Step 6: Final answer
    x = 5,841.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.