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Finding the Fourth Proportional to 11,921.68, 16,451.99 and 7,448.03

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Solution

The fourth proportional to 11,921.68, 16,451.99 and 7,448.03 is: 10,278.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.68 : 16,451.99 = 7,448.03 : x
  2. Step 2: Convert to fraction form
    11,921.68/16,451.99 = 7,448.03/x
  3. Step 3: Cross multiply
    11,921.68x = 16,451.99 × 7,448.03
  4. Step 4: Simplify right side
    11,921.68x = 122,534,956.21
  5. Step 5: Solve for x
    x = 122,534,956.21/11,921.68
  6. Step 6: Final answer
    x = 10,278.33

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.