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Finding the Fourth Proportional to 17,172.76, 25,755.10 and 4,689.82

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Solution

The fourth proportional to 17,172.76, 25,755.10 and 4,689.82 is: 7,033.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,172.76 : 25,755.10 = 4,689.82 : x
  2. Step 2: Convert to fraction form
    17,172.76/25,755.10 = 4,689.82/x
  3. Step 3: Cross multiply
    17,172.76x = 25,755.10 × 4,689.82
  4. Step 4: Simplify right side
    17,172.76x = 120,786,783.08
  5. Step 5: Solve for x
    x = 120,786,783.08/17,172.76
  6. Step 6: Final answer
    x = 7,033.63

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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.