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Finding the Fourth Proportional to 18,447.80, 25,460.25 and 11,276.24

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Solution

The fourth proportional to 18,447.80, 25,460.25 and 11,276.24 is: 15,562.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.80 : 25,460.25 = 11,276.24 : x
  2. Step 2: Convert to fraction form
    18,447.80/25,460.25 = 11,276.24/x
  3. Step 3: Cross multiply
    18,447.80x = 25,460.25 × 11,276.24
  4. Step 4: Simplify right side
    18,447.80x = 287,095,889.46
  5. Step 5: Solve for x
    x = 287,095,889.46/18,447.80
  6. Step 6: Final answer
    x = 15,562.61

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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.