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Finding the Fourth Proportional to 33,840.50, 46,721.07 and 21,745.88

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Solution

The fourth proportional to 33,840.50, 46,721.07 and 21,745.88 is: 30,022.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,840.50 : 46,721.07 = 21,745.88 : x
  2. Step 2: Convert to fraction form
    33,840.50/46,721.07 = 21,745.88/x
  3. Step 3: Cross multiply
    33,840.50x = 46,721.07 × 21,745.88
  4. Step 4: Simplify right side
    33,840.50x = 1,015,990,781.69
  5. Step 5: Solve for x
    x = 1,015,990,781.69/33,840.50
  6. Step 6: Final answer
    x = 30,022.92

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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.