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Finding the Fourth Proportional to 573,085,138.80, 859,627,708.20 and 245,504,906.40

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Solution

The fourth proportional to 573,085,138.80, 859,627,708.20 and 245,504,906.40 is: 368,257,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,085,138.80 : 859,627,708.20 = 245,504,906.40 : x
  2. Step 2: Convert to fraction form
    573,085,138.80/859,627,708.20 = 245,504,906.40/x
  3. Step 3: Cross multiply
    573,085,138.80x = 859,627,708.20 × 245,504,906.40
  4. Step 4: Simplify right side
    573,085,138.80x = 211,042,820,040,487,520
  5. Step 5: Solve for x
    x = 211,042,820,040,487,520/573,085,138.80
  6. Step 6: Final answer
    x = 368,257,359.60

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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.