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Finding the Fourth Proportional to 33,859.48, 46,738.62 and 20,431.30

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Solution

The fourth proportional to 33,859.48, 46,738.62 and 20,431.30 is: 28,202.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,859.48 : 46,738.62 = 20,431.30 : x
  2. Step 2: Convert to fraction form
    33,859.48/46,738.62 = 20,431.30/x
  3. Step 3: Cross multiply
    33,859.48x = 46,738.62 × 20,431.30
  4. Step 4: Simplify right side
    33,859.48x = 954,930,766.81
  5. Step 5: Solve for x
    x = 954,930,766.81/33,859.48
  6. Step 6: Final answer
    x = 28,202.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.