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Finding the Fourth Proportional to 5,687.72, 7,849.22 and 3,329.64

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Solution

The fourth proportional to 5,687.72, 7,849.22 and 3,329.64 is: 4,595.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687.72 : 7,849.22 = 3,329.64 : x
  2. Step 2: Convert to fraction form
    5,687.72/7,849.22 = 3,329.64/x
  3. Step 3: Cross multiply
    5,687.72x = 7,849.22 × 3,329.64
  4. Step 4: Simplify right side
    5,687.72x = 26,135,076.88
  5. Step 5: Solve for x
    x = 26,135,076.88/5,687.72
  6. Step 6: Final answer
    x = 4,595.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.