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Finding the Third Proportional to 49,380 and 79,524

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Solution

The third proportional to 49,380 and 79,524 is: 128,069.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,380 : 79,524 = 79,524 : x
  2. Step 2: Convert to fraction form
    49,380/79,524 = 79,524/x
  3. Step 3: Cross multiply
    49,380x = 79,524 × 79,524
  4. Step 4: Simplify right side
    49,380x = 6,324,066,576
  5. Step 5: Solve for x
    x = 6,324,066,576/49,380
  6. Step 6: Final answer
    x = 128,069.39

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.