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Finding the Third Proportional to 54,615 and 82,422

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Solution

The third proportional to 54,615 and 82,422 is: 124,386.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,615 : 82,422 = 82,422 : x
  2. Step 2: Convert to fraction form
    54,615/82,422 = 82,422/x
  3. Step 3: Cross multiply
    54,615x = 82,422 × 82,422
  4. Step 4: Simplify right side
    54,615x = 6,793,386,084
  5. Step 5: Solve for x
    x = 6,793,386,084/54,615
  6. Step 6: Final answer
    x = 124,386.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.