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Finding the Third Proportional to 4,112 and 7,108

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Solution

The third proportional to 4,112 and 7,108 is: 12,286.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,112 : 7,108 = 7,108 : x
  2. Step 2: Convert to fraction form
    4,112/7,108 = 7,108/x
  3. Step 3: Cross multiply
    4,112x = 7,108 × 7,108
  4. Step 4: Simplify right side
    4,112x = 50,523,664
  5. Step 5: Solve for x
    x = 50,523,664/4,112
  6. Step 6: Final answer
    x = 12,286.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.73) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.