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Finding the Fourth Proportional to 57,998.83, 86,979.71 and 18,546.56

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Solution

The fourth proportional to 57,998.83, 86,979.71 and 18,546.56 is: 27,813.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,998.83 : 86,979.71 = 18,546.56 : x
  2. Step 2: Convert to fraction form
    57,998.83/86,979.71 = 18,546.56/x
  3. Step 3: Cross multiply
    57,998.83x = 86,979.71 × 18,546.56
  4. Step 4: Simplify right side
    57,998.83x = 1,613,174,674.11
  5. Step 5: Solve for x
    x = 1,613,174,674.11/57,998.83
  6. Step 6: Final answer
    x = 27,813.92

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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.