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Finding the Third Proportional to 49,640 and 69,438

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Solution

The third proportional to 49,640 and 69,438 is: 97,132.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,640 : 69,438 = 69,438 : x
  2. Step 2: Convert to fraction form
    49,640/69,438 = 69,438/x
  3. Step 3: Cross multiply
    49,640x = 69,438 × 69,438
  4. Step 4: Simplify right side
    49,640x = 4,821,635,844
  5. Step 5: Solve for x
    x = 4,821,635,844/49,640
  6. Step 6: Final answer
    x = 97,132.07

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.