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Finding the Fourth Proportional to 18,531.40, 27,772.52 and 9,772.52

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Solution

The fourth proportional to 18,531.40, 27,772.52 and 9,772.52 is: 14,645.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.40 : 27,772.52 = 9,772.52 : x
  2. Step 2: Convert to fraction form
    18,531.40/27,772.52 = 9,772.52/x
  3. Step 3: Cross multiply
    18,531.40x = 27,772.52 × 9,772.52
  4. Step 4: Simplify right side
    18,531.40x = 271,407,507.15
  5. Step 5: Solve for x
    x = 271,407,507.15/18,531.40
  6. Step 6: Final answer
    x = 14,645.82

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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.