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Finding the Fourth Proportional to 8,936.46, 12,330.36 and 5,398.92

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Solution

The fourth proportional to 8,936.46, 12,330.36 and 5,398.92 is: 7,449.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.46 : 12,330.36 = 5,398.92 : x
  2. Step 2: Convert to fraction form
    8,936.46/12,330.36 = 5,398.92/x
  3. Step 3: Cross multiply
    8,936.46x = 12,330.36 × 5,398.92
  4. Step 4: Simplify right side
    8,936.46x = 66,570,627.21
  5. Step 5: Solve for x
    x = 66,570,627.21/8,936.46
  6. Step 6: Final answer
    x = 7,449.33

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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.