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Finding the Fourth Proportional to 111,372.60, 166,913.10 and 98,833.80

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Solution

The fourth proportional to 111,372.60, 166,913.10 and 98,833.80 is: 148,121.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,372.60 : 166,913.10 = 98,833.80 : x
  2. Step 2: Convert to fraction form
    111,372.60/166,913.10 = 98,833.80/x
  3. Step 3: Cross multiply
    111,372.60x = 166,913.10 × 98,833.80
  4. Step 4: Simplify right side
    111,372.60x = 16,496,655,942.78
  5. Step 5: Solve for x
    x = 16,496,655,942.78/111,372.60
  6. Step 6: Final answer
    x = 148,121.31

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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.