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Finding the Fourth Proportional to 218,458.98, 327,815.84 and 92,091.48

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Solution

The fourth proportional to 218,458.98, 327,815.84 and 92,091.48 is: 138,190.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,458.98 : 327,815.84 = 92,091.48 : x
  2. Step 2: Convert to fraction form
    218,458.98/327,815.84 = 92,091.48/x
  3. Step 3: Cross multiply
    218,458.98x = 327,815.84 × 92,091.48
  4. Step 4: Simplify right side
    218,458.98x = 30,189,045,412.59
  5. Step 5: Solve for x
    x = 30,189,045,412.59/218,458.98
  6. Step 6: Final answer
    x = 138,190.91

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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.