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Finding the Third Proportional to 49,338 and 66,879

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Solution

The third proportional to 49,338 and 66,879 is: 90,656.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,338 : 66,879 = 66,879 : x
  2. Step 2: Convert to fraction form
    49,338/66,879 = 66,879/x
  3. Step 3: Cross multiply
    49,338x = 66,879 × 66,879
  4. Step 4: Simplify right side
    49,338x = 4,472,800,641
  5. Step 5: Solve for x
    x = 4,472,800,641/49,338
  6. Step 6: Final answer
    x = 90,656.30

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.