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Finding the Fourth Proportional to 17,891.26, 26,837.16 and 5,411.38

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Solution

The fourth proportional to 17,891.26, 26,837.16 and 5,411.38 is: 8,117.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,891.26 : 26,837.16 = 5,411.38 : x
  2. Step 2: Convert to fraction form
    17,891.26/26,837.16 = 5,411.38/x
  3. Step 3: Cross multiply
    17,891.26x = 26,837.16 × 5,411.38
  4. Step 4: Simplify right side
    17,891.26x = 145,226,070.88
  5. Step 5: Solve for x
    x = 145,226,070.88/17,891.26
  6. Step 6: Final answer
    x = 8,117.15

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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.