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Finding the Third Proportional to 6,928 and 8,176

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Solution

The third proportional to 6,928 and 8,176 is: 9,648.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,928 : 8,176 = 8,176 : x
  2. Step 2: Convert to fraction form
    6,928/8,176 = 8,176/x
  3. Step 3: Cross multiply
    6,928x = 8,176 × 8,176
  4. Step 4: Simplify right side
    6,928x = 66,846,976
  5. Step 5: Solve for x
    x = 66,846,976/6,928
  6. Step 6: Final answer
    x = 9,648.81

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.