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Finding the Fourth Proportional to 17,212.20, 25,821.90 and 5,526.60

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Solution

The fourth proportional to 17,212.20, 25,821.90 and 5,526.60 is: 8,291.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,212.20 : 25,821.90 = 5,526.60 : x
  2. Step 2: Convert to fraction form
    17,212.20/25,821.90 = 5,526.60/x
  3. Step 3: Cross multiply
    17,212.20x = 25,821.90 × 5,526.60
  4. Step 4: Simplify right side
    17,212.20x = 142,707,312.54
  5. Step 5: Solve for x
    x = 142,707,312.54/17,212.20
  6. Step 6: Final answer
    x = 8,291.06

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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.