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Finding the Fourth Proportional to 3,709.99, 5,121.36 and 3,610.04

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Solution

The fourth proportional to 3,709.99, 5,121.36 and 3,610.04 is: 4,983.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,709.99 : 5,121.36 = 3,610.04 : x
  2. Step 2: Convert to fraction form
    3,709.99/5,121.36 = 3,610.04/x
  3. Step 3: Cross multiply
    3,709.99x = 5,121.36 × 3,610.04
  4. Step 4: Simplify right side
    3,709.99x = 18,488,288.85
  5. Step 5: Solve for x
    x = 18,488,288.85/3,709.99
  6. Step 6: Final answer
    x = 4,983.38

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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.