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Finding the Fourth Proportional to 223,198.67, 308,134.11 and 172,099.41

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Solution

The fourth proportional to 223,198.67, 308,134.11 and 172,099.41 is: 237,589.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,198.67 : 308,134.11 = 172,099.41 : x
  2. Step 2: Convert to fraction form
    223,198.67/308,134.11 = 172,099.41/x
  3. Step 3: Cross multiply
    223,198.67x = 308,134.11 × 172,099.41
  4. Step 4: Simplify right side
    223,198.67x = 53,029,698,531.88
  5. Step 5: Solve for x
    x = 53,029,698,531.88/223,198.67
  6. Step 6: Final answer
    x = 237,589.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.