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Finding the Fourth Proportional to 86,168.34, 118,923.39 and 48,449.88

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Solution

The fourth proportional to 86,168.34, 118,923.39 and 48,449.88 is: 66,867.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,168.34 : 118,923.39 = 48,449.88 : x
  2. Step 2: Convert to fraction form
    86,168.34/118,923.39 = 48,449.88/x
  3. Step 3: Cross multiply
    86,168.34x = 118,923.39 × 48,449.88
  4. Step 4: Simplify right side
    86,168.34x = 5,761,823,974.69
  5. Step 5: Solve for x
    x = 5,761,823,974.69/86,168.34
  6. Step 6: Final answer
    x = 66,867.06

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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.