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Finding the Fourth Proportional to 5,198.79, 7,799.40 and 3,556.11

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Solution

The fourth proportional to 5,198.79, 7,799.40 and 3,556.11 is: 5,335.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,198.79 : 7,799.40 = 3,556.11 : x
  2. Step 2: Convert to fraction form
    5,198.79/7,799.40 = 3,556.11/x
  3. Step 3: Cross multiply
    5,198.79x = 7,799.40 × 3,556.11
  4. Step 4: Simplify right side
    5,198.79x = 27,735,524.33
  5. Step 5: Solve for x
    x = 27,735,524.33/5,198.79
  6. Step 6: Final answer
    x = 5,335.00

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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.