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Finding the Fourth Proportional to 9,222.76, 13,832.11 and 2,647.48

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Solution

The fourth proportional to 9,222.76, 13,832.11 and 2,647.48 is: 3,970.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,222.76 : 13,832.11 = 2,647.48 : x
  2. Step 2: Convert to fraction form
    9,222.76/13,832.11 = 2,647.48/x
  3. Step 3: Cross multiply
    9,222.76x = 13,832.11 × 2,647.48
  4. Step 4: Simplify right side
    9,222.76x = 36,620,221.35
  5. Step 5: Solve for x
    x = 36,620,221.35/9,222.76
  6. Step 6: Final answer
    x = 3,970.64

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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.