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Finding the Fourth Proportional to 263,879.89, 394,885.50 and 164,087.08

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Solution

The fourth proportional to 263,879.89, 394,885.50 and 164,087.08 is: 245,549.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,879.89 : 394,885.50 = 164,087.08 : x
  2. Step 2: Convert to fraction form
    263,879.89/394,885.50 = 164,087.08/x
  3. Step 3: Cross multiply
    263,879.89x = 394,885.50 × 164,087.08
  4. Step 4: Simplify right side
    263,879.89x = 64,795,608,629.34
  5. Step 5: Solve for x
    x = 64,795,608,629.34/263,879.89
  6. Step 6: Final answer
    x = 245,549.63

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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.