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Finding the Third Proportional to 3,918 and 6,295.50

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Solution

The third proportional to 3,918 and 6,295.50 is: 10,115.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918 : 6,295.50 = 6,295.50 : x
  2. Step 2: Convert to fraction form
    3,918/6,295.50 = 6,295.50/x
  3. Step 3: Cross multiply
    3,918x = 6,295.50 × 6,295.50
  4. Step 4: Simplify right side
    3,918x = 39,633,320.25
  5. Step 5: Solve for x
    x = 39,633,320.25/3,918
  6. Step 6: Final answer
    x = 10,115.70

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.