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Finding the Fourth Proportional to 181,314.59, 271,878.02 and 81,388.73

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Solution

The fourth proportional to 181,314.59, 271,878.02 and 81,388.73 is: 122,040.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,314.59 : 271,878.02 = 81,388.73 : x
  2. Step 2: Convert to fraction form
    181,314.59/271,878.02 = 81,388.73/x
  3. Step 3: Cross multiply
    181,314.59x = 271,878.02 × 81,388.73
  4. Step 4: Simplify right side
    181,314.59x = 22,127,807,340.67
  5. Step 5: Solve for x
    x = 22,127,807,340.67/181,314.59
  6. Step 6: Final answer
    x = 122,040.97

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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.