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Finding the Fourth Proportional to 5,251.89, 7,868.54 and 4,679.88

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Solution

The fourth proportional to 5,251.89, 7,868.54 and 4,679.88 is: 7,011.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.89 : 7,868.54 = 4,679.88 : x
  2. Step 2: Convert to fraction form
    5,251.89/7,868.54 = 4,679.88/x
  3. Step 3: Cross multiply
    5,251.89x = 7,868.54 × 4,679.88
  4. Step 4: Simplify right side
    5,251.89x = 36,823,805.17
  5. Step 5: Solve for x
    x = 36,823,805.17/5,251.89
  6. Step 6: Final answer
    x = 7,011.54

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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.