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Finding the Fourth Proportional to 4,979.71, 7,469.97 and 4,848.49

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Solution

The fourth proportional to 4,979.71, 7,469.97 and 4,848.49 is: 7,273.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.71 : 7,469.97 = 4,848.49 : x
  2. Step 2: Convert to fraction form
    4,979.71/7,469.97 = 4,848.49/x
  3. Step 3: Cross multiply
    4,979.71x = 7,469.97 × 4,848.49
  4. Step 4: Simplify right side
    4,979.71x = 36,218,074.85
  5. Step 5: Solve for x
    x = 36,218,074.85/4,979.71
  6. Step 6: Final answer
    x = 7,273.13

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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.