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Finding the Third Proportional to 47,864 and 75,756

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Solution

The third proportional to 47,864 and 75,756 is: 119,901.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,864 : 75,756 = 75,756 : x
  2. Step 2: Convert to fraction form
    47,864/75,756 = 75,756/x
  3. Step 3: Cross multiply
    47,864x = 75,756 × 75,756
  4. Step 4: Simplify right side
    47,864x = 5,738,971,536
  5. Step 5: Solve for x
    x = 5,738,971,536/47,864
  6. Step 6: Final answer
    x = 119,901.63

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.