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Finding the Fourth Proportional to 105,953.99, 158,993.15 and 39,440.43

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Solution

The fourth proportional to 105,953.99, 158,993.15 and 39,440.43 is: 59,183.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,953.99 : 158,993.15 = 39,440.43 : x
  2. Step 2: Convert to fraction form
    105,953.99/158,993.15 = 39,440.43/x
  3. Step 3: Cross multiply
    105,953.99x = 158,993.15 × 39,440.43
  4. Step 4: Simplify right side
    105,953.99x = 6,270,758,005.85
  5. Step 5: Solve for x
    x = 6,270,758,005.85/105,953.99
  6. Step 6: Final answer
    x = 59,183.79

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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.