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Finding the Fourth Proportional to 2,789.71, 3,849.87 and 1,530.82

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Solution

The fourth proportional to 2,789.71, 3,849.87 and 1,530.82 is: 2,112.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.71 : 3,849.87 = 1,530.82 : x
  2. Step 2: Convert to fraction form
    2,789.71/3,849.87 = 1,530.82/x
  3. Step 3: Cross multiply
    2,789.71x = 3,849.87 × 1,530.82
  4. Step 4: Simplify right side
    2,789.71x = 5,893,457.99
  5. Step 5: Solve for x
    x = 5,893,457.99/2,789.71
  6. Step 6: Final answer
    x = 2,112.57

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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.