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Finding the Fourth Proportional to 361,393.57, 542,091.57 and 91,521.56

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Solution

The fourth proportional to 361,393.57, 542,091.57 and 91,521.56 is: 137,282.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,393.57 : 542,091.57 = 91,521.56 : x
  2. Step 2: Convert to fraction form
    361,393.57/542,091.57 = 91,521.56/x
  3. Step 3: Cross multiply
    361,393.57x = 542,091.57 × 91,521.56
  4. Step 4: Simplify right side
    361,393.57x = 49,613,067,676.08
  5. Step 5: Solve for x
    x = 49,613,067,676.08/361,393.57
  6. Step 6: Final answer
    x = 137,282.65

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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.