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Finding the Fourth Proportional to 6,616.68, 9,923.58 and 3,328.80

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Solution

The fourth proportional to 6,616.68, 9,923.58 and 3,328.80 is: 4,992.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,616.68 : 9,923.58 = 3,328.80 : x
  2. Step 2: Convert to fraction form
    6,616.68/9,923.58 = 3,328.80/x
  3. Step 3: Cross multiply
    6,616.68x = 9,923.58 × 3,328.80
  4. Step 4: Simplify right side
    6,616.68x = 33,033,613.10
  5. Step 5: Solve for x
    x = 33,033,613.10/6,616.68
  6. Step 6: Final answer
    x = 4,992.48

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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.