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Finding the Third Proportional to 4,892 and 7,610

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Solution

The third proportional to 4,892 and 7,610 is: 11,838.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,892 : 7,610 = 7,610 : x
  2. Step 2: Convert to fraction form
    4,892/7,610 = 7,610/x
  3. Step 3: Cross multiply
    4,892x = 7,610 × 7,610
  4. Step 4: Simplify right side
    4,892x = 57,912,100
  5. Step 5: Solve for x
    x = 57,912,100/4,892
  6. Step 6: Final answer
    x = 11,838.12

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.