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Finding the Fourth Proportional to 33,980.70, 50,873.85 and 20,858.70

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Solution

The fourth proportional to 33,980.70, 50,873.85 and 20,858.70 is: 31,228.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,980.70 : 50,873.85 = 20,858.70 : x
  2. Step 2: Convert to fraction form
    33,980.70/50,873.85 = 20,858.70/x
  3. Step 3: Cross multiply
    33,980.70x = 50,873.85 × 20,858.70
  4. Step 4: Simplify right side
    33,980.70x = 1,061,162,375.00
  5. Step 5: Solve for x
    x = 1,061,162,375.00/33,980.70
  6. Step 6: Final answer
    x = 31,228.38

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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.