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Finding the Fourth Proportional to 68,905.65, 95,104.62 and 42,042.42

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Solution

The fourth proportional to 68,905.65, 95,104.62 and 42,042.42 is: 58,027.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,905.65 : 95,104.62 = 42,042.42 : x
  2. Step 2: Convert to fraction form
    68,905.65/95,104.62 = 42,042.42/x
  3. Step 3: Cross multiply
    68,905.65x = 95,104.62 × 42,042.42
  4. Step 4: Simplify right side
    68,905.65x = 3,998,428,377.98
  5. Step 5: Solve for x
    x = 3,998,428,377.98/68,905.65
  6. Step 6: Final answer
    x = 58,027.58

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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.