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Finding the Fourth Proportional to 355,694,990, 490,859,086.20 and 192,903,566

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Solution

The fourth proportional to 355,694,990, 490,859,086.20 and 192,903,566 is: 266,206,921.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,694,990 : 490,859,086.20 = 192,903,566 : x
  2. Step 2: Convert to fraction form
    355,694,990/490,859,086.20 = 192,903,566/x
  3. Step 3: Cross multiply
    355,694,990x = 490,859,086.20 × 192,903,566
  4. Step 4: Simplify right side
    355,694,990x = 94,688,468,131,481,392
  5. Step 5: Solve for x
    x = 94,688,468,131,481,392/355,694,990
  6. Step 6: Final answer
    x = 266,206,921.08

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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.