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Finding the Fourth Proportional to 86,605.46, 129,911.83 and 27,439.82

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Solution

The fourth proportional to 86,605.46, 129,911.83 and 27,439.82 is: 41,160.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,605.46 : 129,911.83 = 27,439.82 : x
  2. Step 2: Convert to fraction form
    86,605.46/129,911.83 = 27,439.82/x
  3. Step 3: Cross multiply
    86,605.46x = 129,911.83 × 27,439.82
  4. Step 4: Simplify right side
    86,605.46x = 3,564,757,231.07
  5. Step 5: Solve for x
    x = 3,564,757,231.07/86,605.46
  6. Step 6: Final answer
    x = 41,160.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.