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Finding the Fourth Proportional to 13,200.10, 18,216.53 and 7,232.11

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Solution

The fourth proportional to 13,200.10, 18,216.53 and 7,232.11 is: 9,980.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.10 : 18,216.53 = 7,232.11 : x
  2. Step 2: Convert to fraction form
    13,200.10/18,216.53 = 7,232.11/x
  3. Step 3: Cross multiply
    13,200.10x = 18,216.53 × 7,232.11
  4. Step 4: Simplify right side
    13,200.10x = 131,743,948.78
  5. Step 5: Solve for x
    x = 131,743,948.78/13,200.10
  6. Step 6: Final answer
    x = 9,980.53

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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.