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Finding the Fourth Proportional to 203,876.93, 281,348.51 and 111,997.76

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Solution

The fourth proportional to 203,876.93, 281,348.51 and 111,997.76 is: 154,555.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,876.93 : 281,348.51 = 111,997.76 : x
  2. Step 2: Convert to fraction form
    203,876.93/281,348.51 = 111,997.76/x
  3. Step 3: Cross multiply
    203,876.93x = 281,348.51 × 111,997.76
  4. Step 4: Simplify right side
    203,876.93x = 31,510,400,932.61
  5. Step 5: Solve for x
    x = 31,510,400,932.61/203,876.93
  6. Step 6: Final answer
    x = 154,555.99

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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.