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Finding the Fourth Proportional to 13,056.62, 18,017.87 and 7,391.25

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Solution

The fourth proportional to 13,056.62, 18,017.87 and 7,391.25 is: 10,199.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,056.62 : 18,017.87 = 7,391.25 : x
  2. Step 2: Convert to fraction form
    13,056.62/18,017.87 = 7,391.25/x
  3. Step 3: Cross multiply
    13,056.62x = 18,017.87 × 7,391.25
  4. Step 4: Simplify right side
    13,056.62x = 133,174,544.68
  5. Step 5: Solve for x
    x = 133,174,544.68/13,056.62
  6. Step 6: Final answer
    x = 10,199.78

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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.