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Finding the Third Proportional to 964 and 1,691

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Solution

The third proportional to 964 and 1,691 is: 2,966.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    964 : 1,691 = 1,691 : x
  2. Step 2: Convert to fraction form
    964/1,691 = 1,691/x
  3. Step 3: Cross multiply
    964x = 1,691 × 1,691
  4. Step 4: Simplify right side
    964x = 2,859,481
  5. Step 5: Solve for x
    x = 2,859,481/964
  6. Step 6: Final answer
    x = 2,966.27

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Why These Related Problems?

These problems maintain the same ratio (1.75) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.