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Finding the Fourth Proportional to 7,960.92, 10,984.04 and 5,306.55

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Solution

The fourth proportional to 7,960.92, 10,984.04 and 5,306.55 is: 7,321.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,960.92 : 10,984.04 = 5,306.55 : x
  2. Step 2: Convert to fraction form
    7,960.92/10,984.04 = 5,306.55/x
  3. Step 3: Cross multiply
    7,960.92x = 10,984.04 × 5,306.55
  4. Step 4: Simplify right side
    7,960.92x = 58,287,309.64
  5. Step 5: Solve for x
    x = 58,287,309.64/7,960.92
  6. Step 6: Final answer
    x = 7,321.68

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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.