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Finding the Fourth Proportional to 135,993,679.80, 203,990,519.70 and 114,948,616.20

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Solution

The fourth proportional to 135,993,679.80, 203,990,519.70 and 114,948,616.20 is: 172,422,924.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,993,679.80 : 203,990,519.70 = 114,948,616.20 : x
  2. Step 2: Convert to fraction form
    135,993,679.80/203,990,519.70 = 114,948,616.20/x
  3. Step 3: Cross multiply
    135,993,679.80x = 203,990,519.70 × 114,948,616.20
  4. Step 4: Simplify right side
    135,993,679.80x = 23,448,427,957,433,840
  5. Step 5: Solve for x
    x = 23,448,427,957,433,840/135,993,679.80
  6. Step 6: Final answer
    x = 172,422,924.30

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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.