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Finding the Fourth Proportional to 8,936.96, 12,330.96 and 5,398.88

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Solution

The fourth proportional to 8,936.96, 12,330.96 and 5,398.88 is: 7,449.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.96 : 12,330.96 = 5,398.88 : x
  2. Step 2: Convert to fraction form
    8,936.96/12,330.96 = 5,398.88/x
  3. Step 3: Cross multiply
    8,936.96x = 12,330.96 × 5,398.88
  4. Step 4: Simplify right side
    8,936.96x = 66,573,373.32
  5. Step 5: Solve for x
    x = 66,573,373.32/8,936.96
  6. Step 6: Final answer
    x = 7,449.22

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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.