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Finding the Fourth Proportional to 7,091.97, 9,789.95 and 5,049.19

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Solution

The fourth proportional to 7,091.97, 9,789.95 and 5,049.19 is: 6,970.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.97 : 9,789.95 = 5,049.19 : x
  2. Step 2: Convert to fraction form
    7,091.97/9,789.95 = 5,049.19/x
  3. Step 3: Cross multiply
    7,091.97x = 9,789.95 × 5,049.19
  4. Step 4: Simplify right side
    7,091.97x = 49,431,267.92
  5. Step 5: Solve for x
    x = 49,431,267.92/7,091.97
  6. Step 6: Final answer
    x = 6,970.03

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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.