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Finding the Fourth Proportional to 18,627.16, 25,705.74 and 10,243.84

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Solution

The fourth proportional to 18,627.16, 25,705.74 and 10,243.84 is: 14,136.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.16 : 25,705.74 = 10,243.84 : x
  2. Step 2: Convert to fraction form
    18,627.16/25,705.74 = 10,243.84/x
  3. Step 3: Cross multiply
    18,627.16x = 25,705.74 × 10,243.84
  4. Step 4: Simplify right side
    18,627.16x = 263,325,487.64
  5. Step 5: Solve for x
    x = 263,325,487.64/18,627.16
  6. Step 6: Final answer
    x = 14,136.64

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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.