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Finding the Fourth Proportional to 111,910.50, 167,865.75 and 45,338.22

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Solution

The fourth proportional to 111,910.50, 167,865.75 and 45,338.22 is: 68,007.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,910.50 : 167,865.75 = 45,338.22 : x
  2. Step 2: Convert to fraction form
    111,910.50/167,865.75 = 45,338.22/x
  3. Step 3: Cross multiply
    111,910.50x = 167,865.75 × 45,338.22
  4. Step 4: Simplify right side
    111,910.50x = 7,610,734,303.97
  5. Step 5: Solve for x
    x = 7,610,734,303.97/111,910.50
  6. Step 6: Final answer
    x = 68,007.33

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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.