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Finding the Fourth Proportional to 29,986.77, 41,365.17 and 18,658.11

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Solution

The fourth proportional to 29,986.77, 41,365.17 and 18,658.11 is: 25,737.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,986.77 : 41,365.17 = 18,658.11 : x
  2. Step 2: Convert to fraction form
    29,986.77/41,365.17 = 18,658.11/x
  3. Step 3: Cross multiply
    29,986.77x = 41,365.17 × 18,658.11
  4. Step 4: Simplify right side
    29,986.77x = 771,795,892.03
  5. Step 5: Solve for x
    x = 771,795,892.03/29,986.77
  6. Step 6: Final answer
    x = 25,737.88

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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.