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Finding the Third Proportional to 4,016 and 6,821

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Solution

The third proportional to 4,016 and 6,821 is: 11,585.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,016 : 6,821 = 6,821 : x
  2. Step 2: Convert to fraction form
    4,016/6,821 = 6,821/x
  3. Step 3: Cross multiply
    4,016x = 6,821 × 6,821
  4. Step 4: Simplify right side
    4,016x = 46,526,041
  5. Step 5: Solve for x
    x = 46,526,041/4,016
  6. Step 6: Final answer
    x = 11,585.17

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Why These Related Problems?

These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.