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Finding the Fourth Proportional to 17,942.69, 24,735.24 and 12,620.99

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Solution

The fourth proportional to 17,942.69, 24,735.24 and 12,620.99 is: 17,398.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,942.69 : 24,735.24 = 12,620.99 : x
  2. Step 2: Convert to fraction form
    17,942.69/24,735.24 = 12,620.99/x
  3. Step 3: Cross multiply
    17,942.69x = 24,735.24 × 12,620.99
  4. Step 4: Simplify right side
    17,942.69x = 312,183,124.56
  5. Step 5: Solve for x
    x = 312,183,124.56/17,942.69
  6. Step 6: Final answer
    x = 17,398.91

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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.