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Finding the Fourth Proportional to 18,461.58, 25,460.90 and 11,286.06

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Solution

The fourth proportional to 18,461.58, 25,460.90 and 11,286.06 is: 15,564.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.58 : 25,460.90 = 11,286.06 : x
  2. Step 2: Convert to fraction form
    18,461.58/25,460.90 = 11,286.06/x
  3. Step 3: Cross multiply
    18,461.58x = 25,460.90 × 11,286.06
  4. Step 4: Simplify right side
    18,461.58x = 287,353,245.05
  5. Step 5: Solve for x
    x = 287,353,245.05/18,461.58
  6. Step 6: Final answer
    x = 15,564.93

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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.