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Finding the Fourth Proportional to 17,361.59, 26,021.48 and 7,988.67

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Solution

The fourth proportional to 17,361.59, 26,021.48 and 7,988.67 is: 11,973.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,361.59 : 26,021.48 = 7,988.67 : x
  2. Step 2: Convert to fraction form
    17,361.59/26,021.48 = 7,988.67/x
  3. Step 3: Cross multiply
    17,361.59x = 26,021.48 × 7,988.67
  4. Step 4: Simplify right side
    17,361.59x = 207,876,976.69
  5. Step 5: Solve for x
    x = 207,876,976.69/17,361.59
  6. Step 6: Final answer
    x = 11,973.39

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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.