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Finding the Fourth Proportional to 221,382,463.20, 332,073,694.80 and 140,959,960.80

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Solution

The fourth proportional to 221,382,463.20, 332,073,694.80 and 140,959,960.80 is: 211,439,941.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,382,463.20 : 332,073,694.80 = 140,959,960.80 : x
  2. Step 2: Convert to fraction form
    221,382,463.20/332,073,694.80 = 140,959,960.80/x
  3. Step 3: Cross multiply
    221,382,463.20x = 332,073,694.80 × 140,959,960.80
  4. Step 4: Simplify right side
    221,382,463.20x = 46,809,095,001,719,168
  5. Step 5: Solve for x
    x = 46,809,095,001,719,168/221,382,463.20
  6. Step 6: Final answer
    x = 211,439,941.20

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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.