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Finding the Third Proportional to 41,640 and 66,600

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Solution

The third proportional to 41,640 and 66,600 is: 106,521.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,640 : 66,600 = 66,600 : x
  2. Step 2: Convert to fraction form
    41,640/66,600 = 66,600/x
  3. Step 3: Cross multiply
    41,640x = 66,600 × 66,600
  4. Step 4: Simplify right side
    41,640x = 4,435,560,000
  5. Step 5: Solve for x
    x = 4,435,560,000/41,640
  6. Step 6: Final answer
    x = 106,521.61

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.