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Finding the Fourth Proportional to 17,920.17, 26,891.73 and 7,531.92

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Solution

The fourth proportional to 17,920.17, 26,891.73 and 7,531.92 is: 11,302.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920.17 : 26,891.73 = 7,531.92 : x
  2. Step 2: Convert to fraction form
    17,920.17/26,891.73 = 7,531.92/x
  3. Step 3: Cross multiply
    17,920.17x = 26,891.73 × 7,531.92
  4. Step 4: Simplify right side
    17,920.17x = 202,546,359.02
  5. Step 5: Solve for x
    x = 202,546,359.02/17,920.17
  6. Step 6: Final answer
    x = 11,302.70

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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.