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Finding the Third Proportional to 693 and 1,522.13

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Solution

The third proportional to 693 and 1,522.13 is: 3,343.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    693 : 1,522.13 = 1,522.13 : x
  2. Step 2: Convert to fraction form
    693/1,522.13 = 1,522.13/x
  3. Step 3: Cross multiply
    693x = 1,522.13 × 1,522.13
  4. Step 4: Simplify right side
    693x = 2,316,864.52
  5. Step 5: Solve for x
    x = 2,316,864.52/693
  6. Step 6: Final answer
    x = 3,343.24

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.