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Finding the Fourth Proportional to 13,900.48, 20,851.44 and 3,512.32

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Solution

The fourth proportional to 13,900.48, 20,851.44 and 3,512.32 is: 5,268.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.48 : 20,851.44 = 3,512.32 : x
  2. Step 2: Convert to fraction form
    13,900.48/20,851.44 = 3,512.32/x
  3. Step 3: Cross multiply
    13,900.48x = 20,851.44 × 3,512.32
  4. Step 4: Simplify right side
    13,900.48x = 73,236,929.74
  5. Step 5: Solve for x
    x = 73,236,929.74/13,900.48
  6. Step 6: Final answer
    x = 5,268.66

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.