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Finding the Fourth Proportional to 111,359.52, 166,816.68 and 66,961.86

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Solution

The fourth proportional to 111,359.52, 166,816.68 and 66,961.86 is: 100,308.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,359.52 : 166,816.68 = 66,961.86 : x
  2. Step 2: Convert to fraction form
    111,359.52/166,816.68 = 66,961.86/x
  3. Step 3: Cross multiply
    111,359.52x = 166,816.68 × 66,961.86
  4. Step 4: Simplify right side
    111,359.52x = 11,170,355,171.82
  5. Step 5: Solve for x
    x = 11,170,355,171.82/111,359.52
  6. Step 6: Final answer
    x = 100,308.94

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1.5x scale

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.