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Finding the Third Proportional to 38,424 and 81,060

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Solution

The third proportional to 38,424 and 81,060 is: 171,005.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,424 : 81,060 = 81,060 : x
  2. Step 2: Convert to fraction form
    38,424/81,060 = 81,060/x
  3. Step 3: Cross multiply
    38,424x = 81,060 × 81,060
  4. Step 4: Simplify right side
    38,424x = 6,570,723,600
  5. Step 5: Solve for x
    x = 6,570,723,600/38,424
  6. Step 6: Final answer
    x = 171,005.72

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.