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Finding the Fourth Proportional to 17,129.80, 25,694.70 and 4,816.20

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Solution

The fourth proportional to 17,129.80, 25,694.70 and 4,816.20 is: 7,224.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,129.80 : 25,694.70 = 4,816.20 : x
  2. Step 2: Convert to fraction form
    17,129.80/25,694.70 = 4,816.20/x
  3. Step 3: Cross multiply
    17,129.80x = 25,694.70 × 4,816.20
  4. Step 4: Simplify right side
    17,129.80x = 123,750,814.14
  5. Step 5: Solve for x
    x = 123,750,814.14/17,129.80
  6. Step 6: Final answer
    x = 7,224.30

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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.