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Finding the Fourth Proportional to 18,665.48, 25,756.48 and 11,494.24

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Solution

The fourth proportional to 18,665.48, 25,756.48 and 11,494.24 is: 15,860.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.48 : 25,756.48 = 11,494.24 : x
  2. Step 2: Convert to fraction form
    18,665.48/25,756.48 = 11,494.24/x
  3. Step 3: Cross multiply
    18,665.48x = 25,756.48 × 11,494.24
  4. Step 4: Simplify right side
    18,665.48x = 296,051,162.68
  5. Step 5: Solve for x
    x = 296,051,162.68/18,665.48
  6. Step 6: Final answer
    x = 15,860.90

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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.