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Finding the Third Proportional to 4,739.50 and 9,782

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Solution

The third proportional to 4,739.50 and 9,782 is: 20,189.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,739.50 : 9,782 = 9,782 : x
  2. Step 2: Convert to fraction form
    4,739.50/9,782 = 9,782/x
  3. Step 3: Cross multiply
    4,739.50x = 9,782 × 9,782
  4. Step 4: Simplify right side
    4,739.50x = 95,687,524
  5. Step 5: Solve for x
    x = 95,687,524/4,739.50
  6. Step 6: Final answer
    x = 20,189.37

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.