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Finding the Third Proportional to 605 and 1,147

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Solution

The third proportional to 605 and 1,147 is: 2,174.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    605 : 1,147 = 1,147 : x
  2. Step 2: Convert to fraction form
    605/1,147 = 1,147/x
  3. Step 3: Cross multiply
    605x = 1,147 × 1,147
  4. Step 4: Simplify right side
    605x = 1,315,609
  5. Step 5: Solve for x
    x = 1,315,609/605
  6. Step 6: Final answer
    x = 2,174.56

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Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.