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Finding the Third Proportional to 1,165 and 1,749

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Solution

The third proportional to 1,165 and 1,749 is: 2,625.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165 : 1,749 = 1,749 : x
  2. Step 2: Convert to fraction form
    1,165/1,749 = 1,749/x
  3. Step 3: Cross multiply
    1,165x = 1,749 × 1,749
  4. Step 4: Simplify right side
    1,165x = 3,059,001
  5. Step 5: Solve for x
    x = 3,059,001/1,165
  6. Step 6: Final answer
    x = 2,625.75

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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.