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Finding the Fourth Proportional to 111,674.72, 167,543.35 and 45,161.55

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Solution

The fourth proportional to 111,674.72, 167,543.35 and 45,161.55 is: 67,754.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,674.72 : 167,543.35 = 45,161.55 : x
  2. Step 2: Convert to fraction form
    111,674.72/167,543.35 = 45,161.55/x
  3. Step 3: Cross multiply
    111,674.72x = 167,543.35 × 45,161.55
  4. Step 4: Simplify right side
    111,674.72x = 7,566,517,265.29
  5. Step 5: Solve for x
    x = 7,566,517,265.29/111,674.72
  6. Step 6: Final answer
    x = 67,754.97

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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.