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Finding the Fourth Proportional to 111,940.70, 167,911.05 and 110,903.90

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Solution

The fourth proportional to 111,940.70, 167,911.05 and 110,903.90 is: 166,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,940.70 : 167,911.05 = 110,903.90 : x
  2. Step 2: Convert to fraction form
    111,940.70/167,911.05 = 110,903.90/x
  3. Step 3: Cross multiply
    111,940.70x = 167,911.05 × 110,903.90
  4. Step 4: Simplify right side
    111,940.70x = 18,621,990,298.10
  5. Step 5: Solve for x
    x = 18,621,990,298.10/111,940.70
  6. Step 6: Final answer
    x = 166,355.85

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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.