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Finding the Fourth Proportional to 17,993,910.40, 26,990,865.60 and 13,476,661.90

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Solution

The fourth proportional to 17,993,910.40, 26,990,865.60 and 13,476,661.90 is: 20,214,992.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,993,910.40 : 26,990,865.60 = 13,476,661.90 : x
  2. Step 2: Convert to fraction form
    17,993,910.40/26,990,865.60 = 13,476,661.90/x
  3. Step 3: Cross multiply
    17,993,910.40x = 26,990,865.60 × 13,476,661.90
  4. Step 4: Simplify right side
    17,993,910.40x = 363,746,770,079,540.69
  5. Step 5: Solve for x
    x = 363,746,770,079,540.69/17,993,910.40
  6. Step 6: Final answer
    x = 20,214,992.85

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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.