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Finding the Fourth Proportional to 167,980.60, 251,679.30 and 108,785.80

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Solution

The fourth proportional to 167,980.60, 251,679.30 and 108,785.80 is: 162,989.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,980.60 : 251,679.30 = 108,785.80 : x
  2. Step 2: Convert to fraction form
    167,980.60/251,679.30 = 108,785.80/x
  3. Step 3: Cross multiply
    167,980.60x = 251,679.30 × 108,785.80
  4. Step 4: Simplify right side
    167,980.60x = 27,379,133,993.94
  5. Step 5: Solve for x
    x = 27,379,133,993.94/167,980.60
  6. Step 6: Final answer
    x = 162,989.86

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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.