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Finding the Fourth Proportional to 5,425.28, 7,486.40 and 3,068

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Solution

The fourth proportional to 5,425.28, 7,486.40 and 3,068 is: 4,233.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.28 : 7,486.40 = 3,068 : x
  2. Step 2: Convert to fraction form
    5,425.28/7,486.40 = 3,068/x
  3. Step 3: Cross multiply
    5,425.28x = 7,486.40 × 3,068
  4. Step 4: Simplify right side
    5,425.28x = 22,968,275.20
  5. Step 5: Solve for x
    x = 22,968,275.20/5,425.28
  6. Step 6: Final answer
    x = 4,233.56

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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.