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Finding the Fourth Proportional to 7,351.60, 11,028.12 and 2,672

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Solution

The fourth proportional to 7,351.60, 11,028.12 and 2,672 is: 4,008.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,351.60 : 11,028.12 = 2,672 : x
  2. Step 2: Convert to fraction form
    7,351.60/11,028.12 = 2,672/x
  3. Step 3: Cross multiply
    7,351.60x = 11,028.12 × 2,672
  4. Step 4: Simplify right side
    7,351.60x = 29,467,136.64
  5. Step 5: Solve for x
    x = 29,467,136.64/7,351.60
  6. Step 6: Final answer
    x = 4,008.26

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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.