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Finding the Third Proportional to 14,920 and 34,489

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Solution

The third proportional to 14,920 and 34,489 is: 79,724.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920 : 34,489 = 34,489 : x
  2. Step 2: Convert to fraction form
    14,920/34,489 = 34,489/x
  3. Step 3: Cross multiply
    14,920x = 34,489 × 34,489
  4. Step 4: Simplify right side
    14,920x = 1,189,491,121
  5. Step 5: Solve for x
    x = 1,189,491,121/14,920
  6. Step 6: Final answer
    x = 79,724.61

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.