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Finding the Fourth Proportional to 111,937.20, 167,808.60 and 67,516.80

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Solution

The fourth proportional to 111,937.20, 167,808.60 and 67,516.80 is: 101,216.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,937.20 : 167,808.60 = 67,516.80 : x
  2. Step 2: Convert to fraction form
    111,937.20/167,808.60 = 67,516.80/x
  3. Step 3: Cross multiply
    111,937.20x = 167,808.60 × 67,516.80
  4. Step 4: Simplify right side
    111,937.20x = 11,329,899,684.48
  5. Step 5: Solve for x
    x = 11,329,899,684.48/111,937.20
  6. Step 6: Final answer
    x = 101,216.57

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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.