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Finding the Fourth Proportional to 20,673.87, 30,993.46 and 17,154.02

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Solution

The fourth proportional to 20,673.87, 30,993.46 and 17,154.02 is: 25,716.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.87 : 30,993.46 = 17,154.02 : x
  2. Step 2: Convert to fraction form
    20,673.87/30,993.46 = 17,154.02/x
  3. Step 3: Cross multiply
    20,673.87x = 30,993.46 × 17,154.02
  4. Step 4: Simplify right side
    20,673.87x = 531,662,234.86
  5. Step 5: Solve for x
    x = 531,662,234.86/20,673.87
  6. Step 6: Final answer
    x = 25,716.63

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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.