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Finding the Fourth Proportional to 68,878.44, 95,053.64 and 38,665.98

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Solution

The fourth proportional to 68,878.44, 95,053.64 and 38,665.98 is: 53,359.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,878.44 : 95,053.64 = 38,665.98 : x
  2. Step 2: Convert to fraction form
    68,878.44/95,053.64 = 38,665.98/x
  3. Step 3: Cross multiply
    68,878.44x = 95,053.64 × 38,665.98
  4. Step 4: Simplify right side
    68,878.44x = 3,675,341,949.84
  5. Step 5: Solve for x
    x = 3,675,341,949.84/68,878.44
  6. Step 6: Final answer
    x = 53,359.83

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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.