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Finding the Fourth Proportional to 80,563.69, 111,208.92 and 53,696.41

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Solution

The fourth proportional to 80,563.69, 111,208.92 and 53,696.41 is: 74,121.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,563.69 : 111,208.92 = 53,696.41 : x
  2. Step 2: Convert to fraction form
    80,563.69/111,208.92 = 53,696.41/x
  3. Step 3: Cross multiply
    80,563.69x = 111,208.92 × 53,696.41
  4. Step 4: Simplify right side
    80,563.69x = 5,971,519,763.98
  5. Step 5: Solve for x
    x = 5,971,519,763.98/80,563.69
  6. Step 6: Final answer
    x = 74,121.73

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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.