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Finding the Third Proportional to 3,208 and 6,928

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Solution

The third proportional to 3,208 and 6,928 is: 14,961.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208 : 6,928 = 6,928 : x
  2. Step 2: Convert to fraction form
    3,208/6,928 = 6,928/x
  3. Step 3: Cross multiply
    3,208x = 6,928 × 6,928
  4. Step 4: Simplify right side
    3,208x = 47,997,184
  5. Step 5: Solve for x
    x = 47,997,184/3,208
  6. Step 6: Final answer
    x = 14,961.72

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.