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Finding the Fourth Proportional to 110,920.40, 166,380.60 and 108,004.40

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Solution

The fourth proportional to 110,920.40, 166,380.60 and 108,004.40 is: 162,006.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,920.40 : 166,380.60 = 108,004.40 : x
  2. Step 2: Convert to fraction form
    110,920.40/166,380.60 = 108,004.40/x
  3. Step 3: Cross multiply
    110,920.40x = 166,380.60 × 108,004.40
  4. Step 4: Simplify right side
    110,920.40x = 17,969,836,874.64
  5. Step 5: Solve for x
    x = 17,969,836,874.64/110,920.40
  6. Step 6: Final answer
    x = 162,006.60

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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.