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Finding the Fourth Proportional to 4,992.72, 7,489.99 and 2,071.26

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Solution

The fourth proportional to 4,992.72, 7,489.99 and 2,071.26 is: 3,107.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,992.72 : 7,489.99 = 2,071.26 : x
  2. Step 2: Convert to fraction form
    4,992.72/7,489.99 = 2,071.26/x
  3. Step 3: Cross multiply
    4,992.72x = 7,489.99 × 2,071.26
  4. Step 4: Simplify right side
    4,992.72x = 15,513,716.69
  5. Step 5: Solve for x
    x = 15,513,716.69/4,992.72
  6. Step 6: Final answer
    x = 3,107.27

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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.