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Finding the Third Proportional to 3,413.25 and 7,170

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Solution

The third proportional to 3,413.25 and 7,170 is: 15,061.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.25 : 7,170 = 7,170 : x
  2. Step 2: Convert to fraction form
    3,413.25/7,170 = 7,170/x
  3. Step 3: Cross multiply
    3,413.25x = 7,170 × 7,170
  4. Step 4: Simplify right side
    3,413.25x = 51,408,900
  5. Step 5: Solve for x
    x = 51,408,900/3,413.25
  6. Step 6: Final answer
    x = 15,061.57

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.