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Finding the Fourth Proportional to 18,756.56, 25,884.16 and 10,798.72

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Solution

The fourth proportional to 18,756.56, 25,884.16 and 10,798.72 is: 14,902.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,756.56 : 25,884.16 = 10,798.72 : x
  2. Step 2: Convert to fraction form
    18,756.56/25,884.16 = 10,798.72/x
  3. Step 3: Cross multiply
    18,756.56x = 25,884.16 × 10,798.72
  4. Step 4: Simplify right side
    18,756.56x = 279,515,704.57
  5. Step 5: Solve for x
    x = 279,515,704.57/18,756.56
  6. Step 6: Final answer
    x = 14,902.29

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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.