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Finding the Third Proportional to 84,669 and 186,615

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Solution

The third proportional to 84,669 and 186,615 is: 411,309.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,669 : 186,615 = 186,615 : x
  2. Step 2: Convert to fraction form
    84,669/186,615 = 186,615/x
  3. Step 3: Cross multiply
    84,669x = 186,615 × 186,615
  4. Step 4: Simplify right side
    84,669x = 34,825,158,225
  5. Step 5: Solve for x
    x = 34,825,158,225/84,669
  6. Step 6: Final answer
    x = 411,309.43

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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.