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Finding the Fourth Proportional to 18,786.60, 25,924.82 and 10,829.16

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Solution

The fourth proportional to 18,786.60, 25,924.82 and 10,829.16 is: 14,943.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.60 : 25,924.82 = 10,829.16 : x
  2. Step 2: Convert to fraction form
    18,786.60/25,924.82 = 10,829.16/x
  3. Step 3: Cross multiply
    18,786.60x = 25,924.82 × 10,829.16
  4. Step 4: Simplify right side
    18,786.60x = 280,744,023.75
  5. Step 5: Solve for x
    x = 280,744,023.75/18,786.60
  6. Step 6: Final answer
    x = 14,943.84

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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.