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Finding the Fourth Proportional to 79,611.34, 119,413.11 and 29,687.54

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Solution

The fourth proportional to 79,611.34, 119,413.11 and 29,687.54 is: 44,529.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,611.34 : 119,413.11 = 29,687.54 : x
  2. Step 2: Convert to fraction form
    79,611.34/119,413.11 = 29,687.54/x
  3. Step 3: Cross multiply
    79,611.34x = 119,413.11 × 29,687.54
  4. Step 4: Simplify right side
    79,611.34x = 3,545,081,479.65
  5. Step 5: Solve for x
    x = 3,545,081,479.65/79,611.34
  6. Step 6: Final answer
    x = 44,529.86

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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.