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Finding the Fourth Proportional to 13,662.30, 20,460.60 and 7,801.14

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Solution

The fourth proportional to 13,662.30, 20,460.60 and 7,801.14 is: 11,682.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662.30 : 20,460.60 = 7,801.14 : x
  2. Step 2: Convert to fraction form
    13,662.30/20,460.60 = 7,801.14/x
  3. Step 3: Cross multiply
    13,662.30x = 20,460.60 × 7,801.14
  4. Step 4: Simplify right side
    13,662.30x = 159,616,005.08
  5. Step 5: Solve for x
    x = 159,616,005.08/13,662.30
  6. Step 6: Final answer
    x = 11,682.95

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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.