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Finding the Fourth Proportional to 203,891.85, 281,372.67 and 118,992.51

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Solution

The fourth proportional to 203,891.85, 281,372.67 and 118,992.51 is: 164,210.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,891.85 : 281,372.67 = 118,992.51 : x
  2. Step 2: Convert to fraction form
    203,891.85/281,372.67 = 118,992.51/x
  3. Step 3: Cross multiply
    203,891.85x = 281,372.67 × 118,992.51
  4. Step 4: Simplify right side
    203,891.85x = 33,481,240,248.70
  5. Step 5: Solve for x
    x = 33,481,240,248.70/203,891.85
  6. Step 6: Final answer
    x = 164,210.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.