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Finding the Fourth Proportional to 158,469.94, 218,690.24 and 86,848.42

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Solution

The fourth proportional to 158,469.94, 218,690.24 and 86,848.42 is: 119,851.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,469.94 : 218,690.24 = 86,848.42 : x
  2. Step 2: Convert to fraction form
    158,469.94/218,690.24 = 86,848.42/x
  3. Step 3: Cross multiply
    158,469.94x = 218,690.24 × 86,848.42
  4. Step 4: Simplify right side
    158,469.94x = 18,992,901,813.42
  5. Step 5: Solve for x
    x = 18,992,901,813.42/158,469.94
  6. Step 6: Final answer
    x = 119,851.76

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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.