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Finding the Fourth Proportional to 4,939.51, 7,410.97 and 2,861.33

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Solution

The fourth proportional to 4,939.51, 7,410.97 and 2,861.33 is: 4,292.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.51 : 7,410.97 = 2,861.33 : x
  2. Step 2: Convert to fraction form
    4,939.51/7,410.97 = 2,861.33/x
  3. Step 3: Cross multiply
    4,939.51x = 7,410.97 × 2,861.33
  4. Step 4: Simplify right side
    4,939.51x = 21,205,189.26
  5. Step 5: Solve for x
    x = 21,205,189.26/4,939.51
  6. Step 6: Final answer
    x = 4,292.98

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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.