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Finding the Third Proportional to 968 and 1,605

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Solution

The third proportional to 968 and 1,605 is: 2,661.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    968 : 1,605 = 1,605 : x
  2. Step 2: Convert to fraction form
    968/1,605 = 1,605/x
  3. Step 3: Cross multiply
    968x = 1,605 × 1,605
  4. Step 4: Simplify right side
    968x = 2,576,025
  5. Step 5: Solve for x
    x = 2,576,025/968
  6. Step 6: Final answer
    x = 2,661.18

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.