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Finding the Fourth Proportional to 18,383.79, 25,365.18 and 11,667

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Solution

The fourth proportional to 18,383.79, 25,365.18 and 11,667 is: 16,097.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,383.79 : 25,365.18 = 11,667 : x
  2. Step 2: Convert to fraction form
    18,383.79/25,365.18 = 11,667/x
  3. Step 3: Cross multiply
    18,383.79x = 25,365.18 × 11,667
  4. Step 4: Simplify right side
    18,383.79x = 295,935,555.06
  5. Step 5: Solve for x
    x = 295,935,555.06/18,383.79
  6. Step 6: Final answer
    x = 16,097.64

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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.