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Finding the Third Proportional to 6,939 and 7,425

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Solution

The third proportional to 6,939 and 7,425 is: 7,945.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,939 : 7,425 = 7,425 : x
  2. Step 2: Convert to fraction form
    6,939/7,425 = 7,425/x
  3. Step 3: Cross multiply
    6,939x = 7,425 × 7,425
  4. Step 4: Simplify right side
    6,939x = 55,130,625
  5. Step 5: Solve for x
    x = 55,130,625/6,939
  6. Step 6: Final answer
    x = 7,945.04

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.