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Finding the Fourth Proportional to 13,752.09, 20,625.50 and 3,888.99

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Solution

The fourth proportional to 13,752.09, 20,625.50 and 3,888.99 is: 5,832.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.09 : 20,625.50 = 3,888.99 : x
  2. Step 2: Convert to fraction form
    13,752.09/20,625.50 = 3,888.99/x
  3. Step 3: Cross multiply
    13,752.09x = 20,625.50 × 3,888.99
  4. Step 4: Simplify right side
    13,752.09x = 80,212,372.97
  5. Step 5: Solve for x
    x = 80,212,372.97/13,752.09
  6. Step 6: Final answer
    x = 5,832.74

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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.