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Finding the Fourth Proportional to 17,919.94, 26,893.81 and 12,411.87

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Solution

The fourth proportional to 17,919.94, 26,893.81 and 12,411.87 is: 18,627.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,919.94 : 26,893.81 = 12,411.87 : x
  2. Step 2: Convert to fraction form
    17,919.94/26,893.81 = 12,411.87/x
  3. Step 3: Cross multiply
    17,919.94x = 26,893.81 × 12,411.87
  4. Step 4: Simplify right side
    17,919.94x = 333,802,473.52
  5. Step 5: Solve for x
    x = 333,802,473.52/17,919.94
  6. Step 6: Final answer
    x = 18,627.44

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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.