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Finding the Fourth Proportional to 111,396.31, 167,128.93 and 36,517.03

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Solution

The fourth proportional to 111,396.31, 167,128.93 and 36,517.03 is: 54,786.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,396.31 : 167,128.93 = 36,517.03 : x
  2. Step 2: Convert to fraction form
    111,396.31/167,128.93 = 36,517.03/x
  3. Step 3: Cross multiply
    111,396.31x = 167,128.93 × 36,517.03
  4. Step 4: Simplify right side
    111,396.31x = 6,103,051,778.50
  5. Step 5: Solve for x
    x = 6,103,051,778.50/111,396.31
  6. Step 6: Final answer
    x = 54,786.84

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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.