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Finding the Fourth Proportional to 10,620.44, 15,932.95 and 3,600.64

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Solution

The fourth proportional to 10,620.44, 15,932.95 and 3,600.64 is: 5,401.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.44 : 15,932.95 = 3,600.64 : x
  2. Step 2: Convert to fraction form
    10,620.44/15,932.95 = 3,600.64/x
  3. Step 3: Cross multiply
    10,620.44x = 15,932.95 × 3,600.64
  4. Step 4: Simplify right side
    10,620.44x = 57,368,817.09
  5. Step 5: Solve for x
    x = 57,368,817.09/10,620.44
  6. Step 6: Final answer
    x = 5,401.74

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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.