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Finding the Fourth Proportional to 5,174.99, 7,144.40 and 3,961.39

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Solution

The fourth proportional to 5,174.99, 7,144.40 and 3,961.39 is: 5,468.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.99 : 7,144.40 = 3,961.39 : x
  2. Step 2: Convert to fraction form
    5,174.99/7,144.40 = 3,961.39/x
  3. Step 3: Cross multiply
    5,174.99x = 7,144.40 × 3,961.39
  4. Step 4: Simplify right side
    5,174.99x = 28,301,699.19
  5. Step 5: Solve for x
    x = 28,301,699.19/5,174.99
  6. Step 6: Final answer
    x = 5,468.94

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1.5x scale

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.