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Finding the Third Proportional to 41,428 and 90,212

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Solution

The third proportional to 41,428 and 90,212 is: 196,442.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,428 : 90,212 = 90,212 : x
  2. Step 2: Convert to fraction form
    41,428/90,212 = 90,212/x
  3. Step 3: Cross multiply
    41,428x = 90,212 × 90,212
  4. Step 4: Simplify right side
    41,428x = 8,138,204,944
  5. Step 5: Solve for x
    x = 8,138,204,944/41,428
  6. Step 6: Final answer
    x = 196,442.14

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.