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Finding the Third Proportional to 21,959 and 48,830

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Solution

The third proportional to 21,959 and 48,830 is: 108,582.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959 : 48,830 = 48,830 : x
  2. Step 2: Convert to fraction form
    21,959/48,830 = 48,830/x
  3. Step 3: Cross multiply
    21,959x = 48,830 × 48,830
  4. Step 4: Simplify right side
    21,959x = 2,384,368,900
  5. Step 5: Solve for x
    x = 2,384,368,900/21,959
  6. Step 6: Final answer
    x = 108,582.76

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.