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Finding the Fourth Proportional to 20,168.30, 30,255.15 and 7,024.70

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Solution

The fourth proportional to 20,168.30, 30,255.15 and 7,024.70 is: 10,537.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.30 : 30,255.15 = 7,024.70 : x
  2. Step 2: Convert to fraction form
    20,168.30/30,255.15 = 7,024.70/x
  3. Step 3: Cross multiply
    20,168.30x = 30,255.15 × 7,024.70
  4. Step 4: Simplify right side
    20,168.30x = 212,533,352.21
  5. Step 5: Solve for x
    x = 212,533,352.21/20,168.30
  6. Step 6: Final answer
    x = 10,537.99

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.