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Finding the Third Proportional to 30,861 and 63,906.75

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Solution

The third proportional to 30,861 and 63,906.75 is: 132,337.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,861 : 63,906.75 = 63,906.75 : x
  2. Step 2: Convert to fraction form
    30,861/63,906.75 = 63,906.75/x
  3. Step 3: Cross multiply
    30,861x = 63,906.75 × 63,906.75
  4. Step 4: Simplify right side
    30,861x = 4,084,072,695.56
  5. Step 5: Solve for x
    x = 4,084,072,695.56/30,861
  6. Step 6: Final answer
    x = 132,337.67

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.