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Finding the Fourth Proportional to 23,979.81, 35,991.87 and 12,141.89

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Solution

The fourth proportional to 23,979.81, 35,991.87 and 12,141.89 is: 18,224.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,979.81 : 35,991.87 = 12,141.89 : x
  2. Step 2: Convert to fraction form
    23,979.81/35,991.87 = 12,141.89/x
  3. Step 3: Cross multiply
    23,979.81x = 35,991.87 × 12,141.89
  4. Step 4: Simplify right side
    23,979.81x = 437,009,326.43
  5. Step 5: Solve for x
    x = 437,009,326.43/23,979.81
  6. Step 6: Final answer
    x = 18,224.05

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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.