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Finding the Fourth Proportional to 81,940.56, 122,958.63 and 34,552.73

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Solution

The fourth proportional to 81,940.56, 122,958.63 and 34,552.73 is: 51,849.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,940.56 : 122,958.63 = 34,552.73 : x
  2. Step 2: Convert to fraction form
    81,940.56/122,958.63 = 34,552.73/x
  3. Step 3: Cross multiply
    81,940.56x = 122,958.63 × 34,552.73
  4. Step 4: Simplify right side
    81,940.56x = 4,248,555,728.77
  5. Step 5: Solve for x
    x = 4,248,555,728.77/81,940.56
  6. Step 6: Final answer
    x = 51,849.24

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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.