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Finding the Fourth Proportional to 13,021.56, 17,969.04 and 7,356.96

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Solution

The fourth proportional to 13,021.56, 17,969.04 and 7,356.96 is: 10,152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.56 : 17,969.04 = 7,356.96 : x
  2. Step 2: Convert to fraction form
    13,021.56/17,969.04 = 7,356.96/x
  3. Step 3: Cross multiply
    13,021.56x = 17,969.04 × 7,356.96
  4. Step 4: Simplify right side
    13,021.56x = 132,197,508.52
  5. Step 5: Solve for x
    x = 132,197,508.52/13,021.56
  6. Step 6: Final answer
    x = 10,152.20

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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.