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Finding the Third Proportional to 3,311.25 and 5,271

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Solution

The third proportional to 3,311.25 and 5,271 is: 8,390.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.25 : 5,271 = 5,271 : x
  2. Step 2: Convert to fraction form
    3,311.25/5,271 = 5,271/x
  3. Step 3: Cross multiply
    3,311.25x = 5,271 × 5,271
  4. Step 4: Simplify right side
    3,311.25x = 27,783,441
  5. Step 5: Solve for x
    x = 27,783,441/3,311.25
  6. Step 6: Final answer
    x = 8,390.62

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.