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Finding the Fourth Proportional to 3,992.96, 5,505.36 and 3,282.32

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Solution

The fourth proportional to 3,992.96, 5,505.36 and 3,282.32 is: 4,525.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.96 : 5,505.36 = 3,282.32 : x
  2. Step 2: Convert to fraction form
    3,992.96/5,505.36 = 3,282.32/x
  3. Step 3: Cross multiply
    3,992.96x = 5,505.36 × 3,282.32
  4. Step 4: Simplify right side
    3,992.96x = 18,070,353.24
  5. Step 5: Solve for x
    x = 18,070,353.24/3,992.96
  6. Step 6: Final answer
    x = 4,525.55

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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.