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Finding the Fourth Proportional to 2,890.92, 3,983.94 and 2,061.48

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Solution

The fourth proportional to 2,890.92, 3,983.94 and 2,061.48 is: 2,840.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.92 : 3,983.94 = 2,061.48 : x
  2. Step 2: Convert to fraction form
    2,890.92/3,983.94 = 2,061.48/x
  3. Step 3: Cross multiply
    2,890.92x = 3,983.94 × 2,061.48
  4. Step 4: Simplify right side
    2,890.92x = 8,212,812.63
  5. Step 5: Solve for x
    x = 8,212,812.63/2,890.92
  6. Step 6: Final answer
    x = 2,840.90

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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.