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Finding the Third Proportional to 38,930.63 and 82,407.38

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Solution

The third proportional to 38,930.63 and 82,407.38 is: 174,437.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,930.63 : 82,407.38 = 82,407.38 : x
  2. Step 2: Convert to fraction form
    38,930.63/82,407.38 = 82,407.38/x
  3. Step 3: Cross multiply
    38,930.63x = 82,407.38 × 82,407.38
  4. Step 4: Simplify right side
    38,930.63x = 6,790,975,454.39
  5. Step 5: Solve for x
    x = 6,790,975,454.39/38,930.63
  6. Step 6: Final answer
    x = 174,437.87

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.