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Finding the Third Proportional to 6,536 and 7,940

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Solution

The third proportional to 6,536 and 7,940 is: 9,645.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,536 : 7,940 = 7,940 : x
  2. Step 2: Convert to fraction form
    6,536/7,940 = 7,940/x
  3. Step 3: Cross multiply
    6,536x = 7,940 × 7,940
  4. Step 4: Simplify right side
    6,536x = 63,043,600
  5. Step 5: Solve for x
    x = 63,043,600/6,536
  6. Step 6: Final answer
    x = 9,645.59

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.