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Finding the Fourth Proportional to 4,578.96, 6,317 and 2,922

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Solution

The fourth proportional to 4,578.96, 6,317 and 2,922 is: 4,031.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,578.96 : 6,317 = 2,922 : x
  2. Step 2: Convert to fraction form
    4,578.96/6,317 = 2,922/x
  3. Step 3: Cross multiply
    4,578.96x = 6,317 × 2,922
  4. Step 4: Simplify right side
    4,578.96x = 18,458,274
  5. Step 5: Solve for x
    x = 18,458,274/4,578.96
  6. Step 6: Final answer
    x = 4,031.11

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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.