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Finding the Fourth Proportional to 18,719.30, 25,833.48 and 10,764.02

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Solution

The fourth proportional to 18,719.30, 25,833.48 and 10,764.02 is: 14,854.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.30 : 25,833.48 = 10,764.02 : x
  2. Step 2: Convert to fraction form
    18,719.30/25,833.48 = 10,764.02/x
  3. Step 3: Cross multiply
    18,719.30x = 25,833.48 × 10,764.02
  4. Step 4: Simplify right side
    18,719.30x = 278,072,095.39
  5. Step 5: Solve for x
    x = 278,072,095.39/18,719.30
  6. Step 6: Final answer
    x = 14,854.83

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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.