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Finding the Third Proportional to 1,635 and 3,216.75

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Solution

The third proportional to 1,635 and 3,216.75 is: 6,328.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635 : 3,216.75 = 3,216.75 : x
  2. Step 2: Convert to fraction form
    1,635/3,216.75 = 3,216.75/x
  3. Step 3: Cross multiply
    1,635x = 3,216.75 × 3,216.75
  4. Step 4: Simplify right side
    1,635x = 10,347,480.56
  5. Step 5: Solve for x
    x = 10,347,480.56/1,635
  6. Step 6: Final answer
    x = 6,328.73

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.