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Finding the Third Proportional to 19,765.50 and 43,419

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Solution

The third proportional to 19,765.50 and 43,419 is: 95,378.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,765.50 : 43,419 = 43,419 : x
  2. Step 2: Convert to fraction form
    19,765.50/43,419 = 43,419/x
  3. Step 3: Cross multiply
    19,765.50x = 43,419 × 43,419
  4. Step 4: Simplify right side
    19,765.50x = 1,885,209,561
  5. Step 5: Solve for x
    x = 1,885,209,561/19,765.50
  6. Step 6: Final answer
    x = 95,378.79

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.