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Finding the Fourth Proportional to 118,471.88, 177,717.12 and 39,586.34

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Solution

The fourth proportional to 118,471.88, 177,717.12 and 39,586.34 is: 59,382.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,471.88 : 177,717.12 = 39,586.34 : x
  2. Step 2: Convert to fraction form
    118,471.88/177,717.12 = 39,586.34/x
  3. Step 3: Cross multiply
    118,471.88x = 177,717.12 × 39,586.34
  4. Step 4: Simplify right side
    118,471.88x = 7,035,170,336.14
  5. Step 5: Solve for x
    x = 7,035,170,336.14/118,471.88
  6. Step 6: Final answer
    x = 59,382.62

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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.