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Finding the Fourth Proportional to 17,361.54, 26,013.15 and 13,891.50

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Solution

The fourth proportional to 17,361.54, 26,013.15 and 13,891.50 is: 20,813.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,361.54 : 26,013.15 = 13,891.50 : x
  2. Step 2: Convert to fraction form
    17,361.54/26,013.15 = 13,891.50/x
  3. Step 3: Cross multiply
    17,361.54x = 26,013.15 × 13,891.50
  4. Step 4: Simplify right side
    17,361.54x = 361,361,673.23
  5. Step 5: Solve for x
    x = 361,361,673.23/17,361.54
  6. Step 6: Final answer
    x = 20,813.92

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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.