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Finding the Fourth Proportional to 17,219.87, 25,825.53 and 4,739.28

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Solution

The fourth proportional to 17,219.87, 25,825.53 and 4,739.28 is: 7,107.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,219.87 : 25,825.53 = 4,739.28 : x
  2. Step 2: Convert to fraction form
    17,219.87/25,825.53 = 4,739.28/x
  3. Step 3: Cross multiply
    17,219.87x = 25,825.53 × 4,739.28
  4. Step 4: Simplify right side
    17,219.87x = 122,394,417.82
  5. Step 5: Solve for x
    x = 122,394,417.82/17,219.87
  6. Step 6: Final answer
    x = 7,107.75

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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.