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Finding the Fourth Proportional to 17,805.27, 26,703.90 and 7,938.26

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Solution

The fourth proportional to 17,805.27, 26,703.90 and 7,938.26 is: 11,905.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,805.27 : 26,703.90 = 7,938.26 : x
  2. Step 2: Convert to fraction form
    17,805.27/26,703.90 = 7,938.26/x
  3. Step 3: Cross multiply
    17,805.27x = 26,703.90 × 7,938.26
  4. Step 4: Simplify right side
    17,805.27x = 211,982,367.69
  5. Step 5: Solve for x
    x = 211,982,367.69/17,805.27
  6. Step 6: Final answer
    x = 11,905.60

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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.