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Finding the Fourth Proportional to 158,350.88, 218,524.29 and 86,735.45

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Solution

The fourth proportional to 158,350.88, 218,524.29 and 86,735.45 is: 119,694.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,350.88 : 218,524.29 = 86,735.45 : x
  2. Step 2: Convert to fraction form
    158,350.88/218,524.29 = 86,735.45/x
  3. Step 3: Cross multiply
    158,350.88x = 218,524.29 × 86,735.45
  4. Step 4: Simplify right side
    158,350.88x = 18,953,802,629.08
  5. Step 5: Solve for x
    x = 18,953,802,629.08/158,350.88
  6. Step 6: Final answer
    x = 119,694.96

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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.