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Finding the Fourth Proportional to 73,811.80, 110,717.70 and 51,650.20

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Solution

The fourth proportional to 73,811.80, 110,717.70 and 51,650.20 is: 77,475.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,811.80 : 110,717.70 = 51,650.20 : x
  2. Step 2: Convert to fraction form
    73,811.80/110,717.70 = 51,650.20/x
  3. Step 3: Cross multiply
    73,811.80x = 110,717.70 × 51,650.20
  4. Step 4: Simplify right side
    73,811.80x = 5,718,591,348.54
  5. Step 5: Solve for x
    x = 5,718,591,348.54/73,811.80
  6. Step 6: Final answer
    x = 77,475.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.