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Finding the Fourth Proportional to 312,757,902.80, 469,304,815.80 and 131,023,451.60

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Solution

The fourth proportional to 312,757,902.80, 469,304,815.80 and 131,023,451.60 is: 196,605,541.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,757,902.80 : 469,304,815.80 = 131,023,451.60 : x
  2. Step 2: Convert to fraction form
    312,757,902.80/469,304,815.80 = 131,023,451.60/x
  3. Step 3: Cross multiply
    312,757,902.80x = 469,304,815.80 × 131,023,451.60
  4. Step 4: Simplify right side
    312,757,902.80x = 61,489,936,818,618,216
  5. Step 5: Solve for x
    x = 61,489,936,818,618,216/312,757,902.80
  6. Step 6: Final answer
    x = 196,605,541.44

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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.