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Finding the Fourth Proportional to 89,793.41, 123,912.53 and 49,506.49

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Solution

The fourth proportional to 89,793.41, 123,912.53 and 49,506.49 is: 68,317.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,793.41 : 123,912.53 = 49,506.49 : x
  2. Step 2: Convert to fraction form
    89,793.41/123,912.53 = 49,506.49/x
  3. Step 3: Cross multiply
    89,793.41x = 123,912.53 × 49,506.49
  4. Step 4: Simplify right side
    89,793.41x = 6,134,474,798.80
  5. Step 5: Solve for x
    x = 6,134,474,798.80/89,793.41
  6. Step 6: Final answer
    x = 68,317.65

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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.