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Finding the Fourth Proportional to 25,170, 34,734.72 and 13,992

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Solution

The fourth proportional to 25,170, 34,734.72 and 13,992 is: 19,309.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,170 : 34,734.72 = 13,992 : x
  2. Step 2: Convert to fraction form
    25,170/34,734.72 = 13,992/x
  3. Step 3: Cross multiply
    25,170x = 34,734.72 × 13,992
  4. Step 4: Simplify right side
    25,170x = 486,008,202.24
  5. Step 5: Solve for x
    x = 486,008,202.24/25,170
  6. Step 6: Final answer
    x = 19,309.03

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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.