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Finding the Fourth Proportional to 111,912.75, 167,869.16 and 37,012.80

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Solution

The fourth proportional to 111,912.75, 167,869.16 and 37,012.80 is: 55,519.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,912.75 : 167,869.16 = 37,012.80 : x
  2. Step 2: Convert to fraction form
    111,912.75/167,869.16 = 37,012.80/x
  3. Step 3: Cross multiply
    111,912.75x = 167,869.16 × 37,012.80
  4. Step 4: Simplify right side
    111,912.75x = 6,213,307,460.18
  5. Step 5: Solve for x
    x = 6,213,307,460.18/111,912.75
  6. Step 6: Final answer
    x = 55,519.21

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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.