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Finding the Fourth Proportional to 11,958.71, 17,938.08 and 5,717.26

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Solution

The fourth proportional to 11,958.71, 17,938.08 and 5,717.26 is: 8,575.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,958.71 : 17,938.08 = 5,717.26 : x
  2. Step 2: Convert to fraction form
    11,958.71/17,938.08 = 5,717.26/x
  3. Step 3: Cross multiply
    11,958.71x = 17,938.08 × 5,717.26
  4. Step 4: Simplify right side
    11,958.71x = 102,556,577.57
  5. Step 5: Solve for x
    x = 102,556,577.57/11,958.71
  6. Step 6: Final answer
    x = 8,575.89

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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.