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Finding the Third Proportional to 6,916 and 15,942

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Solution

The third proportional to 6,916 and 15,942 is: 36,747.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,916 : 15,942 = 15,942 : x
  2. Step 2: Convert to fraction form
    6,916/15,942 = 15,942/x
  3. Step 3: Cross multiply
    6,916x = 15,942 × 15,942
  4. Step 4: Simplify right side
    6,916x = 254,147,364
  5. Step 5: Solve for x
    x = 254,147,364/6,916
  6. Step 6: Final answer
    x = 36,747.74

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.