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Finding the Fourth Proportional to 118,471.73, 177,716.78 and 39,586.24

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Solution

The fourth proportional to 118,471.73, 177,716.78 and 39,586.24 is: 59,382.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,471.73 : 177,716.78 = 39,586.24 : x
  2. Step 2: Convert to fraction form
    118,471.73/177,716.78 = 39,586.24/x
  3. Step 3: Cross multiply
    118,471.73x = 177,716.78 × 39,586.24
  4. Step 4: Simplify right side
    118,471.73x = 7,035,138,018.59
  5. Step 5: Solve for x
    x = 7,035,138,018.59/118,471.73
  6. Step 6: Final answer
    x = 59,382.42

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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.