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Finding the Third Proportional to 7,071.75 and 11,017.13

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Solution

The third proportional to 7,071.75 and 11,017.13 is: 17,163.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,071.75 : 11,017.13 = 11,017.13 : x
  2. Step 2: Convert to fraction form
    7,071.75/11,017.13 = 11,017.13/x
  3. Step 3: Cross multiply
    7,071.75x = 11,017.13 × 11,017.13
  4. Step 4: Simplify right side
    7,071.75x = 121,377,043.27
  5. Step 5: Solve for x
    x = 121,377,043.27/7,071.75
  6. Step 6: Final answer
    x = 17,163.65

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.