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Finding the Third Proportional to 3,215,679.75 and 7,061,185.13

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Solution

The third proportional to 3,215,679.75 and 7,061,185.13 is: 15,505,379.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215,679.75 : 7,061,185.13 = 7,061,185.13 : x
  2. Step 2: Convert to fraction form
    3,215,679.75/7,061,185.13 = 7,061,185.13/x
  3. Step 3: Cross multiply
    3,215,679.75x = 7,061,185.13 × 7,061,185.13
  4. Step 4: Simplify right side
    3,215,679.75x = 49,860,335,369,521.27
  5. Step 5: Solve for x
    x = 49,860,335,369,521.27/3,215,679.75
  6. Step 6: Final answer
    x = 15,505,379.65

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.