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Finding the Fourth Proportional to 96,940.35, 133,879.65 and 86,373.69

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Solution

The fourth proportional to 96,940.35, 133,879.65 and 86,373.69 is: 119,286.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,940.35 : 133,879.65 = 86,373.69 : x
  2. Step 2: Convert to fraction form
    96,940.35/133,879.65 = 86,373.69/x
  3. Step 3: Cross multiply
    96,940.35x = 133,879.65 × 86,373.69
  4. Step 4: Simplify right side
    96,940.35x = 11,563,679,386.41
  5. Step 5: Solve for x
    x = 11,563,679,386.41/96,940.35
  6. Step 6: Final answer
    x = 119,286.54

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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.