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Finding the Fourth Proportional to 394,260.89, 591,440.54 and 154,343.79

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Solution

The fourth proportional to 394,260.89, 591,440.54 and 154,343.79 is: 231,534.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,260.89 : 591,440.54 = 154,343.79 : x
  2. Step 2: Convert to fraction form
    394,260.89/591,440.54 = 154,343.79/x
  3. Step 3: Cross multiply
    394,260.89x = 591,440.54 × 154,343.79
  4. Step 4: Simplify right side
    394,260.89x = 91,285,173,731.53
  5. Step 5: Solve for x
    x = 91,285,173,731.53/394,260.89
  6. Step 6: Final answer
    x = 231,534.95

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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.