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Finding the Third Proportional to 791 and 1,613

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Solution

The third proportional to 791 and 1,613 is: 3,289.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    791 : 1,613 = 1,613 : x
  2. Step 2: Convert to fraction form
    791/1,613 = 1,613/x
  3. Step 3: Cross multiply
    791x = 1,613 × 1,613
  4. Step 4: Simplify right side
    791x = 2,601,769
  5. Step 5: Solve for x
    x = 2,601,769/791
  6. Step 6: Final answer
    x = 3,289.21

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.