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Finding the Fourth Proportional to 13,240.43, 18,272.22 and 7,651.43

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Solution

The fourth proportional to 13,240.43, 18,272.22 and 7,651.43 is: 10,559.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.43 : 18,272.22 = 7,651.43 : x
  2. Step 2: Convert to fraction form
    13,240.43/18,272.22 = 7,651.43/x
  3. Step 3: Cross multiply
    13,240.43x = 18,272.22 × 7,651.43
  4. Step 4: Simplify right side
    13,240.43x = 139,808,612.27
  5. Step 5: Solve for x
    x = 139,808,612.27/13,240.43
  6. Step 6: Final answer
    x = 10,559.22

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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.