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Finding the Fourth Proportional to 111,402.46, 167,161.13 and 73,988.42

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Solution

The fourth proportional to 111,402.46, 167,161.13 and 73,988.42 is: 111,020.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,402.46 : 167,161.13 = 73,988.42 : x
  2. Step 2: Convert to fraction form
    111,402.46/167,161.13 = 73,988.42/x
  3. Step 3: Cross multiply
    111,402.46x = 167,161.13 × 73,988.42
  4. Step 4: Simplify right side
    111,402.46x = 12,367,988,496.99
  5. Step 5: Solve for x
    x = 12,367,988,496.99/111,402.46
  6. Step 6: Final answer
    x = 111,020.79

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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.