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Finding the Third Proportional to 19,520 and 41,080

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Solution

The third proportional to 19,520 and 41,080 is: 86,453.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,520 : 41,080 = 41,080 : x
  2. Step 2: Convert to fraction form
    19,520/41,080 = 41,080/x
  3. Step 3: Cross multiply
    19,520x = 41,080 × 41,080
  4. Step 4: Simplify right side
    19,520x = 1,687,566,400
  5. Step 5: Solve for x
    x = 1,687,566,400/19,520
  6. Step 6: Final answer
    x = 86,453.20

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.