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Finding the Third Proportional to 1,639.13 and 3,193.88

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Solution

The third proportional to 1,639.13 and 3,193.88 is: 6,223.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.13 : 3,193.88 = 3,193.88 : x
  2. Step 2: Convert to fraction form
    1,639.13/3,193.88 = 3,193.88/x
  3. Step 3: Cross multiply
    1,639.13x = 3,193.88 × 3,193.88
  4. Step 4: Simplify right side
    1,639.13x = 10,200,837.52
  5. Step 5: Solve for x
    x = 10,200,837.52/1,639.13
  6. Step 6: Final answer
    x = 6,223.34

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.