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Finding the Fourth Proportional to 221,993,906.20, 332,990,859.30 and 221,993,906.20

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Solution

The fourth proportional to 221,993,906.20, 332,990,859.30 and 221,993,906.20 is: 332,990,859.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,993,906.20 : 332,990,859.30 = 221,993,906.20 : x
  2. Step 2: Convert to fraction form
    221,993,906.20/332,990,859.30 = 221,993,906.20/x
  3. Step 3: Cross multiply
    221,993,906.20x = 332,990,859.30 × 221,993,906.20
  4. Step 4: Simplify right side
    221,993,906.20x = 73,921,941,584,901,600
  5. Step 5: Solve for x
    x = 73,921,941,584,901,600/221,993,906.20
  6. Step 6: Final answer
    x = 332,990,859.30

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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.