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Finding the Fourth Proportional to 7,092.05, 10,638.08 and 7,081.80

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Solution

The fourth proportional to 7,092.05, 10,638.08 and 7,081.80 is: 10,622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,092.05 : 10,638.08 = 7,081.80 : x
  2. Step 2: Convert to fraction form
    7,092.05/10,638.08 = 7,081.80/x
  3. Step 3: Cross multiply
    7,092.05x = 10,638.08 × 7,081.80
  4. Step 4: Simplify right side
    7,092.05x = 75,336,719.54
  5. Step 5: Solve for x
    x = 75,336,719.54/7,092.05
  6. Step 6: Final answer
    x = 10,622.70

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Similar ratio
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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.