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Finding the Fourth Proportional to 188,299,959.80, 282,449,939.70 and 67,135,364.60

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Solution

The fourth proportional to 188,299,959.80, 282,449,939.70 and 67,135,364.60 is: 100,703,046.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,299,959.80 : 282,449,939.70 = 67,135,364.60 : x
  2. Step 2: Convert to fraction form
    188,299,959.80/282,449,939.70 = 67,135,364.60/x
  3. Step 3: Cross multiply
    188,299,959.80x = 282,449,939.70 × 67,135,364.60
  4. Step 4: Simplify right side
    188,299,959.80x = 18,962,379,683,007,512
  5. Step 5: Solve for x
    x = 18,962,379,683,007,512/188,299,959.80
  6. Step 6: Final answer
    x = 100,703,046.90

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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.