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Finding the Third Proportional to 47,285 and 73,212

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Solution

The third proportional to 47,285 and 73,212 is: 113,355.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,285 : 73,212 = 73,212 : x
  2. Step 2: Convert to fraction form
    47,285/73,212 = 73,212/x
  3. Step 3: Cross multiply
    47,285x = 73,212 × 73,212
  4. Step 4: Simplify right side
    47,285x = 5,359,996,944
  5. Step 5: Solve for x
    x = 5,359,996,944/47,285
  6. Step 6: Final answer
    x = 113,355.12

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.