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Finding the Fourth Proportional to 33,758.70, 50,637.90 and 18,758.76

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Solution

The fourth proportional to 33,758.70, 50,637.90 and 18,758.76 is: 28,138.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,758.70 : 50,637.90 = 18,758.76 : x
  2. Step 2: Convert to fraction form
    33,758.70/50,637.90 = 18,758.76/x
  3. Step 3: Cross multiply
    33,758.70x = 50,637.90 × 18,758.76
  4. Step 4: Simplify right side
    33,758.70x = 949,904,213.00
  5. Step 5: Solve for x
    x = 949,904,213.00/33,758.70
  6. Step 6: Final answer
    x = 28,138.06

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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.