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Finding the Fourth Proportional to 111,372.10, 166,912.35 and 98,833.30

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Solution

The fourth proportional to 111,372.10, 166,912.35 and 98,833.30 is: 148,120.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,372.10 : 166,912.35 = 98,833.30 : x
  2. Step 2: Convert to fraction form
    111,372.10/166,912.35 = 98,833.30/x
  3. Step 3: Cross multiply
    111,372.10x = 166,912.35 × 98,833.30
  4. Step 4: Simplify right side
    111,372.10x = 16,496,498,361.26
  5. Step 5: Solve for x
    x = 16,496,498,361.26/111,372.10
  6. Step 6: Final answer
    x = 148,120.56

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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.