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Finding the Fourth Proportional to 62,991.70, 86,928.66 and 34,311.27

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Solution

The fourth proportional to 62,991.70, 86,928.66 and 34,311.27 is: 47,349.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,991.70 : 86,928.66 = 34,311.27 : x
  2. Step 2: Convert to fraction form
    62,991.70/86,928.66 = 34,311.27/x
  3. Step 3: Cross multiply
    62,991.70x = 86,928.66 × 34,311.27
  4. Step 4: Simplify right side
    62,991.70x = 2,982,632,724.00
  5. Step 5: Solve for x
    x = 2,982,632,724.00/62,991.70
  6. Step 6: Final answer
    x = 47,349.61

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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.