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Finding the Fourth Proportional to 177,660.80, 266,491.20 and 111,305.60

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Solution

The fourth proportional to 177,660.80, 266,491.20 and 111,305.60 is: 166,958.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,660.80 : 266,491.20 = 111,305.60 : x
  2. Step 2: Convert to fraction form
    177,660.80/266,491.20 = 111,305.60/x
  3. Step 3: Cross multiply
    177,660.80x = 266,491.20 × 111,305.60
  4. Step 4: Simplify right side
    177,660.80x = 29,661,962,910.72
  5. Step 5: Solve for x
    x = 29,661,962,910.72/177,660.80
  6. Step 6: Final answer
    x = 166,958.40

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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.