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Finding the Fourth Proportional to 89,608.65, 123,658.95 and 49,321.55

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Solution

The fourth proportional to 89,608.65, 123,658.95 and 49,321.55 is: 68,063.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,608.65 : 123,658.95 = 49,321.55 : x
  2. Step 2: Convert to fraction form
    89,608.65/123,658.95 = 49,321.55/x
  3. Step 3: Cross multiply
    89,608.65x = 123,658.95 × 49,321.55
  4. Step 4: Simplify right side
    89,608.65x = 6,099,050,467.08
  5. Step 5: Solve for x
    x = 6,099,050,467.08/89,608.65
  6. Step 6: Final answer
    x = 68,063.19

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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.