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Finding the Fourth Proportional to 5,049.28, 6,967.92 and 2,811.16

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Solution

The fourth proportional to 5,049.28, 6,967.92 and 2,811.16 is: 3,879.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,049.28 : 6,967.92 = 2,811.16 : x
  2. Step 2: Convert to fraction form
    5,049.28/6,967.92 = 2,811.16/x
  3. Step 3: Cross multiply
    5,049.28x = 6,967.92 × 2,811.16
  4. Step 4: Simplify right side
    5,049.28x = 19,587,937.99
  5. Step 5: Solve for x
    x = 19,587,937.99/5,049.28
  6. Step 6: Final answer
    x = 3,879.35

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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.