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Finding the Third Proportional to 7,634 and 11,812

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Solution

The third proportional to 7,634 and 11,812 is: 18,276.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,634 : 11,812 = 11,812 : x
  2. Step 2: Convert to fraction form
    7,634/11,812 = 11,812/x
  3. Step 3: Cross multiply
    7,634x = 11,812 × 11,812
  4. Step 4: Simplify right side
    7,634x = 139,523,344
  5. Step 5: Solve for x
    x = 139,523,344/7,634
  6. Step 6: Final answer
    x = 18,276.57

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.