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Finding the Fourth Proportional to 236,178.59, 354,231.36 and 86,383.85

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Solution

The fourth proportional to 236,178.59, 354,231.36 and 86,383.85 is: 129,562.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,178.59 : 354,231.36 = 86,383.85 : x
  2. Step 2: Convert to fraction form
    236,178.59/354,231.36 = 86,383.85/x
  3. Step 3: Cross multiply
    236,178.59x = 354,231.36 × 86,383.85
  4. Step 4: Simplify right side
    236,178.59x = 30,599,866,896.38
  5. Step 5: Solve for x
    x = 30,599,866,896.38/236,178.59
  6. Step 6: Final answer
    x = 129,562.41

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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.