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Finding the Fourth Proportional to 17,066.80, 25,600.20 and 5,381.20

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Solution

The fourth proportional to 17,066.80, 25,600.20 and 5,381.20 is: 8,071.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,066.80 : 25,600.20 = 5,381.20 : x
  2. Step 2: Convert to fraction form
    17,066.80/25,600.20 = 5,381.20/x
  3. Step 3: Cross multiply
    17,066.80x = 25,600.20 × 5,381.20
  4. Step 4: Simplify right side
    17,066.80x = 137,759,796.24
  5. Step 5: Solve for x
    x = 137,759,796.24/17,066.80
  6. Step 6: Final answer
    x = 8,071.80

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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.