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Finding the Fourth Proportional to 6,793.76, 9,379.68 and 5,218.88

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Solution

The fourth proportional to 6,793.76, 9,379.68 and 5,218.88 is: 7,205.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,793.76 : 9,379.68 = 5,218.88 : x
  2. Step 2: Convert to fraction form
    6,793.76/9,379.68 = 5,218.88/x
  3. Step 3: Cross multiply
    6,793.76x = 9,379.68 × 5,218.88
  4. Step 4: Simplify right side
    6,793.76x = 48,951,424.36
  5. Step 5: Solve for x
    x = 48,951,424.36/6,793.76
  6. Step 6: Final answer
    x = 7,205.35

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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.