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Finding the Fourth Proportional to 13,204.80, 18,226.08 and 7,905.60

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Solution

The fourth proportional to 13,204.80, 18,226.08 and 7,905.60 is: 10,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,204.80 : 18,226.08 = 7,905.60 : x
  2. Step 2: Convert to fraction form
    13,204.80/18,226.08 = 7,905.60/x
  3. Step 3: Cross multiply
    13,204.80x = 18,226.08 × 7,905.60
  4. Step 4: Simplify right side
    13,204.80x = 144,088,098.05
  5. Step 5: Solve for x
    x = 144,088,098.05/13,204.80
  6. Step 6: Final answer
    x = 10,911.80

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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.