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Finding the Third Proportional to 47,989.50 and 76,668

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Solution

The third proportional to 47,989.50 and 76,668 is: 122,484.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,989.50 : 76,668 = 76,668 : x
  2. Step 2: Convert to fraction form
    47,989.50/76,668 = 76,668/x
  3. Step 3: Cross multiply
    47,989.50x = 76,668 × 76,668
  4. Step 4: Simplify right side
    47,989.50x = 5,877,982,224
  5. Step 5: Solve for x
    x = 5,877,982,224/47,989.50
  6. Step 6: Final answer
    x = 122,484.76

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.