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Finding the Fourth Proportional to 119,799.92, 165,323.56 and 68,816

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Solution

The fourth proportional to 119,799.92, 165,323.56 and 68,816 is: 94,965.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,799.92 : 165,323.56 = 68,816 : x
  2. Step 2: Convert to fraction form
    119,799.92/165,323.56 = 68,816/x
  3. Step 3: Cross multiply
    119,799.92x = 165,323.56 × 68,816
  4. Step 4: Simplify right side
    119,799.92x = 11,376,906,104.96
  5. Step 5: Solve for x
    x = 11,376,906,104.96/119,799.92
  6. Step 6: Final answer
    x = 94,965.89

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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.