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Finding the Fourth Proportional to 6,976.56, 9,626.85 and 3,992.22

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Solution

The fourth proportional to 6,976.56, 9,626.85 and 3,992.22 is: 5,508.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,976.56 : 9,626.85 = 3,992.22 : x
  2. Step 2: Convert to fraction form
    6,976.56/9,626.85 = 3,992.22/x
  3. Step 3: Cross multiply
    6,976.56x = 9,626.85 × 3,992.22
  4. Step 4: Simplify right side
    6,976.56x = 38,432,503.11
  5. Step 5: Solve for x
    x = 38,432,503.11/6,976.56
  6. Step 6: Final answer
    x = 5,508.80

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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.