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Finding the Fourth Proportional to 140,951,883.20, 211,364,839.20 and 54,661,611.20

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Solution

The fourth proportional to 140,951,883.20, 211,364,839.20 and 54,661,611.20 is: 81,967,990.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,951,883.20 : 211,364,839.20 = 54,661,611.20 : x
  2. Step 2: Convert to fraction form
    140,951,883.20/211,364,839.20 = 54,661,611.20/x
  3. Step 3: Cross multiply
    140,951,883.20x = 211,364,839.20 × 54,661,611.20
  4. Step 4: Simplify right side
    140,951,883.20x = 11,553,542,661,700,920
  5. Step 5: Solve for x
    x = 11,553,542,661,700,920/140,951,883.20
  6. Step 6: Final answer
    x = 81,967,990.77

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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.