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Finding the Fourth Proportional to 13,798.28, 20,708.94 and 5,485.96

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Solution

The fourth proportional to 13,798.28, 20,708.94 and 5,485.96 is: 8,233.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,798.28 : 20,708.94 = 5,485.96 : x
  2. Step 2: Convert to fraction form
    13,798.28/20,708.94 = 5,485.96/x
  3. Step 3: Cross multiply
    13,798.28x = 20,708.94 × 5,485.96
  4. Step 4: Simplify right side
    13,798.28x = 113,608,416.48
  5. Step 5: Solve for x
    x = 113,608,416.48/13,798.28
  6. Step 6: Final answer
    x = 8,233.52

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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.