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Finding the Fourth Proportional to 361,390.21, 542,042.25 and 95,171.48

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Solution

The fourth proportional to 361,390.21, 542,042.25 and 95,171.48 is: 142,745.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,390.21 : 542,042.25 = 95,171.48 : x
  2. Step 2: Convert to fraction form
    361,390.21/542,042.25 = 95,171.48/x
  3. Step 3: Cross multiply
    361,390.21x = 542,042.25 × 95,171.48
  4. Step 4: Simplify right side
    361,390.21x = 51,586,964,448.09
  5. Step 5: Solve for x
    x = 51,586,964,448.09/361,390.21
  6. Step 6: Final answer
    x = 142,745.88

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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.