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Finding the Fourth Proportional to 1,789.38, 2,696.31 and 1,471.86

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Solution

The fourth proportional to 1,789.38, 2,696.31 and 1,471.86 is: 2,217.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.38 : 2,696.31 = 1,471.86 : x
  2. Step 2: Convert to fraction form
    1,789.38/2,696.31 = 1,471.86/x
  3. Step 3: Cross multiply
    1,789.38x = 2,696.31 × 1,471.86
  4. Step 4: Simplify right side
    1,789.38x = 3,968,590.84
  5. Step 5: Solve for x
    x = 3,968,590.84/1,789.38
  6. Step 6: Final answer
    x = 2,217.86

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.