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Finding the Third Proportional to 964 and 1,742

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Solution

The third proportional to 964 and 1,742 is: 3,147.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    964 : 1,742 = 1,742 : x
  2. Step 2: Convert to fraction form
    964/1,742 = 1,742/x
  3. Step 3: Cross multiply
    964x = 1,742 × 1,742
  4. Step 4: Simplify right side
    964x = 3,034,564
  5. Step 5: Solve for x
    x = 3,034,564/964
  6. Step 6: Final answer
    x = 3,147.89

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Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.