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Finding the Fourth Proportional to 5,257.52, 7,255.28 and 2,867.51

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Solution

The fourth proportional to 5,257.52, 7,255.28 and 2,867.51 is: 3,957.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,257.52 : 7,255.28 = 2,867.51 : x
  2. Step 2: Convert to fraction form
    5,257.52/7,255.28 = 2,867.51/x
  3. Step 3: Cross multiply
    5,257.52x = 7,255.28 × 2,867.51
  4. Step 4: Simplify right side
    5,257.52x = 20,804,587.95
  5. Step 5: Solve for x
    x = 20,804,587.95/5,257.52
  6. Step 6: Final answer
    x = 3,957.11

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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.