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Finding the Third Proportional to 38,913 and 75,882

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Solution

The third proportional to 38,913 and 75,882 is: 147,973.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,913 : 75,882 = 75,882 : x
  2. Step 2: Convert to fraction form
    38,913/75,882 = 75,882/x
  3. Step 3: Cross multiply
    38,913x = 75,882 × 75,882
  4. Step 4: Simplify right side
    38,913x = 5,758,077,924
  5. Step 5: Solve for x
    x = 5,758,077,924/38,913
  6. Step 6: Final answer
    x = 147,973.12

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.