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Finding the Fourth Proportional to 203,963.08, 305,839.58 and 91,546.93

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Solution

The fourth proportional to 203,963.08, 305,839.58 and 91,546.93 is: 137,273.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,963.08 : 305,839.58 = 91,546.93 : x
  2. Step 2: Convert to fraction form
    203,963.08/305,839.58 = 91,546.93/x
  3. Step 3: Cross multiply
    203,963.08x = 305,839.58 × 91,546.93
  4. Step 4: Simplify right side
    203,963.08x = 27,998,674,621.49
  5. Step 5: Solve for x
    x = 27,998,674,621.49/203,963.08
  6. Step 6: Final answer
    x = 137,273.25

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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.