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Finding the Third Proportional to 3,792 and 7,188

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Solution

The third proportional to 3,792 and 7,188 is: 13,625.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,792 : 7,188 = 7,188 : x
  2. Step 2: Convert to fraction form
    3,792/7,188 = 7,188/x
  3. Step 3: Cross multiply
    3,792x = 7,188 × 7,188
  4. Step 4: Simplify right side
    3,792x = 51,667,344
  5. Step 5: Solve for x
    x = 51,667,344/3,792
  6. Step 6: Final answer
    x = 13,625.35

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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.