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Finding the Fourth Proportional to 5,633.48, 7,773.78 and 3,149

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Solution

The fourth proportional to 5,633.48, 7,773.78 and 3,149 is: 4,345.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,633.48 : 7,773.78 = 3,149 : x
  2. Step 2: Convert to fraction form
    5,633.48/7,773.78 = 3,149/x
  3. Step 3: Cross multiply
    5,633.48x = 7,773.78 × 3,149
  4. Step 4: Simplify right side
    5,633.48x = 24,479,633.22
  5. Step 5: Solve for x
    x = 24,479,633.22/5,633.48
  6. Step 6: Final answer
    x = 4,345.38

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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.