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Finding the Fourth Proportional to 90,747,697.80, 136,174,690.80 and 33,245,781.60

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Solution

The fourth proportional to 90,747,697.80, 136,174,690.80 and 33,245,781.60 is: 49,888,141.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,747,697.80 : 136,174,690.80 = 33,245,781.60 : x
  2. Step 2: Convert to fraction form
    90,747,697.80/136,174,690.80 = 33,245,781.60/x
  3. Step 3: Cross multiply
    90,747,697.80x = 136,174,690.80 × 33,245,781.60
  4. Step 4: Simplify right side
    90,747,697.80x = 4,527,234,029,784,330
  5. Step 5: Solve for x
    x = 4,527,234,029,784,330/90,747,697.80
  6. Step 6: Final answer
    x = 49,888,141.95

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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.