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Finding the Fourth Proportional to 11,455.92, 15,796.08 and 9,684.72

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Solution

The fourth proportional to 11,455.92, 15,796.08 and 9,684.72 is: 13,353.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.92 : 15,796.08 = 9,684.72 : x
  2. Step 2: Convert to fraction form
    11,455.92/15,796.08 = 9,684.72/x
  3. Step 3: Cross multiply
    11,455.92x = 15,796.08 × 9,684.72
  4. Step 4: Simplify right side
    11,455.92x = 152,980,611.90
  5. Step 5: Solve for x
    x = 152,980,611.90/11,455.92
  6. Step 6: Final answer
    x = 13,353.85

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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.