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Finding the Fourth Proportional to 19,358.22, 28,993.86 and 16,826.88

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Solution

The fourth proportional to 19,358.22, 28,993.86 and 16,826.88 is: 25,202.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,358.22 : 28,993.86 = 16,826.88 : x
  2. Step 2: Convert to fraction form
    19,358.22/28,993.86 = 16,826.88/x
  3. Step 3: Cross multiply
    19,358.22x = 28,993.86 × 16,826.88
  4. Step 4: Simplify right side
    19,358.22x = 487,876,202.96
  5. Step 5: Solve for x
    x = 487,876,202.96/19,358.22
  6. Step 6: Final answer
    x = 25,202.53

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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.