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Finding the Third Proportional to 6,978 and 15,522

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Solution

The third proportional to 6,978 and 15,522 is: 34,527.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,978 : 15,522 = 15,522 : x
  2. Step 2: Convert to fraction form
    6,978/15,522 = 15,522/x
  3. Step 3: Cross multiply
    6,978x = 15,522 × 15,522
  4. Step 4: Simplify right side
    6,978x = 240,932,484
  5. Step 5: Solve for x
    x = 240,932,484/6,978
  6. Step 6: Final answer
    x = 34,527.44

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.