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Finding the Fourth Proportional to 45,963.52, 68,881.49 and 20,942.42

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Solution

The fourth proportional to 45,963.52, 68,881.49 and 20,942.42 is: 31,384.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,963.52 : 68,881.49 = 20,942.42 : x
  2. Step 2: Convert to fraction form
    45,963.52/68,881.49 = 20,942.42/x
  3. Step 3: Cross multiply
    45,963.52x = 68,881.49 × 20,942.42
  4. Step 4: Simplify right side
    45,963.52x = 1,442,544,723.22
  5. Step 5: Solve for x
    x = 1,442,544,723.22/45,963.52
  6. Step 6: Final answer
    x = 31,384.56

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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.