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Finding the Third Proportional to 18,650.25 and 36,355.50

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Solution

The third proportional to 18,650.25 and 36,355.50 is: 70,868.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,650.25 : 36,355.50 = 36,355.50 : x
  2. Step 2: Convert to fraction form
    18,650.25/36,355.50 = 36,355.50/x
  3. Step 3: Cross multiply
    18,650.25x = 36,355.50 × 36,355.50
  4. Step 4: Simplify right side
    18,650.25x = 1,321,722,380.25
  5. Step 5: Solve for x
    x = 1,321,722,380.25/18,650.25
  6. Step 6: Final answer
    x = 70,868.88

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1.5x scale

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.