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Finding the Fourth Proportional to 13,096.60, 18,068.64 and 7,791.28

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Solution

The fourth proportional to 13,096.60, 18,068.64 and 7,791.28 is: 10,749.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,096.60 : 18,068.64 = 7,791.28 : x
  2. Step 2: Convert to fraction form
    13,096.60/18,068.64 = 7,791.28/x
  3. Step 3: Cross multiply
    13,096.60x = 18,068.64 × 7,791.28
  4. Step 4: Simplify right side
    13,096.60x = 140,777,833.46
  5. Step 5: Solve for x
    x = 140,777,833.46/13,096.60
  6. Step 6: Final answer
    x = 10,749.19

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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.