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Finding the Fourth Proportional to 140,796.62, 211,215.48 and 40,943.87

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Solution

The fourth proportional to 140,796.62, 211,215.48 and 40,943.87 is: 61,421.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,796.62 : 211,215.48 = 40,943.87 : x
  2. Step 2: Convert to fraction form
    140,796.62/211,215.48 = 40,943.87/x
  3. Step 3: Cross multiply
    140,796.62x = 211,215.48 × 40,943.87
  4. Step 4: Simplify right side
    140,796.62x = 8,647,979,155.11
  5. Step 5: Solve for x
    x = 8,647,979,155.11/140,796.62
  6. Step 6: Final answer
    x = 61,421.78

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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.