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Finding the Third Proportional to 51,867 and 61,425

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Solution

The third proportional to 51,867 and 61,425 is: 72,744.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,867 : 61,425 = 61,425 : x
  2. Step 2: Convert to fraction form
    51,867/61,425 = 61,425/x
  3. Step 3: Cross multiply
    51,867x = 61,425 × 61,425
  4. Step 4: Simplify right side
    51,867x = 3,773,030,625
  5. Step 5: Solve for x
    x = 3,773,030,625/51,867
  6. Step 6: Final answer
    x = 72,744.34

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.