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Finding the Fourth Proportional to 10,620.43, 15,930.64 and 3,600.49

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Solution

The fourth proportional to 10,620.43, 15,930.64 and 3,600.49 is: 5,400.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.43 : 15,930.64 = 3,600.49 : x
  2. Step 2: Convert to fraction form
    10,620.43/15,930.64 = 3,600.49/x
  3. Step 3: Cross multiply
    10,620.43x = 15,930.64 × 3,600.49
  4. Step 4: Simplify right side
    10,620.43x = 57,358,110.01
  5. Step 5: Solve for x
    x = 57,358,110.01/10,620.43
  6. Step 6: Final answer
    x = 5,400.73

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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.