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Finding the Fourth Proportional to 18,414.51, 25,410.88 and 10,861.16

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Solution

The fourth proportional to 18,414.51, 25,410.88 and 10,861.16 is: 14,987.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,414.51 : 25,410.88 = 10,861.16 : x
  2. Step 2: Convert to fraction form
    18,414.51/25,410.88 = 10,861.16/x
  3. Step 3: Cross multiply
    18,414.51x = 25,410.88 × 10,861.16
  4. Step 4: Simplify right side
    18,414.51x = 275,991,519.94
  5. Step 5: Solve for x
    x = 275,991,519.94/18,414.51
  6. Step 6: Final answer
    x = 14,987.72

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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.