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Finding the Fourth Proportional to 4,488.68, 6,724.14 and 3,079.64

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Solution

The fourth proportional to 4,488.68, 6,724.14 and 3,079.64 is: 4,613.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,488.68 : 6,724.14 = 3,079.64 : x
  2. Step 2: Convert to fraction form
    4,488.68/6,724.14 = 3,079.64/x
  3. Step 3: Cross multiply
    4,488.68x = 6,724.14 × 3,079.64
  4. Step 4: Simplify right side
    4,488.68x = 20,707,930.51
  5. Step 5: Solve for x
    x = 20,707,930.51/4,488.68
  6. Step 6: Final answer
    x = 4,613.37

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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.