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Finding the Fourth Proportional to 16,826.57, 25,238.94 and 5,138.88

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Solution

The fourth proportional to 16,826.57, 25,238.94 and 5,138.88 is: 7,708.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,826.57 : 25,238.94 = 5,138.88 : x
  2. Step 2: Convert to fraction form
    16,826.57/25,238.94 = 5,138.88/x
  3. Step 3: Cross multiply
    16,826.57x = 25,238.94 × 5,138.88
  4. Step 4: Simplify right side
    16,826.57x = 129,699,883.99
  5. Step 5: Solve for x
    x = 129,699,883.99/16,826.57
  6. Step 6: Final answer
    x = 7,708.04

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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.