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Finding the Fourth Proportional to 110,876.80, 166,315.20 and 31,993.60

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Solution

The fourth proportional to 110,876.80, 166,315.20 and 31,993.60 is: 47,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,876.80 : 166,315.20 = 31,993.60 : x
  2. Step 2: Convert to fraction form
    110,876.80/166,315.20 = 31,993.60/x
  3. Step 3: Cross multiply
    110,876.80x = 166,315.20 × 31,993.60
  4. Step 4: Simplify right side
    110,876.80x = 5,321,021,982.72
  5. Step 5: Solve for x
    x = 5,321,021,982.72/110,876.80
  6. Step 6: Final answer
    x = 47,990.40

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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.