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Finding the Fourth Proportional to 7,074.57, 10,622.24 and 3,960.66

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Solution

The fourth proportional to 7,074.57, 10,622.24 and 3,960.66 is: 5,946.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,074.57 : 10,622.24 = 3,960.66 : x
  2. Step 2: Convert to fraction form
    7,074.57/10,622.24 = 3,960.66/x
  3. Step 3: Cross multiply
    7,074.57x = 10,622.24 × 3,960.66
  4. Step 4: Simplify right side
    7,074.57x = 42,071,115.96
  5. Step 5: Solve for x
    x = 42,071,115.96/7,074.57
  6. Step 6: Final answer
    x = 5,946.81

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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.