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Finding the Fourth Proportional to 119,793.98, 165,315.85 and 68,816.58

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Solution

The fourth proportional to 119,793.98, 165,315.85 and 68,816.58 is: 94,966.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,793.98 : 165,315.85 = 68,816.58 : x
  2. Step 2: Convert to fraction form
    119,793.98/165,315.85 = 68,816.58/x
  3. Step 3: Cross multiply
    119,793.98x = 165,315.85 × 68,816.58
  4. Step 4: Simplify right side
    119,793.98x = 11,376,471,416.79
  5. Step 5: Solve for x
    x = 11,376,471,416.79/119,793.98
  6. Step 6: Final answer
    x = 94,966.97

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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.