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Finding the Fourth Proportional to 11,449.86, 17,174.79 and 3,659.28

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Solution

The fourth proportional to 11,449.86, 17,174.79 and 3,659.28 is: 5,488.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,449.86 : 17,174.79 = 3,659.28 : x
  2. Step 2: Convert to fraction form
    11,449.86/17,174.79 = 3,659.28/x
  3. Step 3: Cross multiply
    11,449.86x = 17,174.79 × 3,659.28
  4. Step 4: Simplify right side
    11,449.86x = 62,847,365.55
  5. Step 5: Solve for x
    x = 62,847,365.55/11,449.86
  6. Step 6: Final answer
    x = 5,488.92

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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.