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Finding the Fourth Proportional to 13,794.36, 20,681.28 and 6,873.72

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Solution

The fourth proportional to 13,794.36, 20,681.28 and 6,873.72 is: 10,305.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,794.36 : 20,681.28 = 6,873.72 : x
  2. Step 2: Convert to fraction form
    13,794.36/20,681.28 = 6,873.72/x
  3. Step 3: Cross multiply
    13,794.36x = 20,681.28 × 6,873.72
  4. Step 4: Simplify right side
    13,794.36x = 142,157,327.96
  5. Step 5: Solve for x
    x = 142,157,327.96/13,794.36
  6. Step 6: Final answer
    x = 10,305.47

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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.