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Finding the Fourth Proportional to 2,490.37, 3,731.22 and 2,078.94

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Solution

The fourth proportional to 2,490.37, 3,731.22 and 2,078.94 is: 3,114.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.37 : 3,731.22 = 2,078.94 : x
  2. Step 2: Convert to fraction form
    2,490.37/3,731.22 = 2,078.94/x
  3. Step 3: Cross multiply
    2,490.37x = 3,731.22 × 2,078.94
  4. Step 4: Simplify right side
    2,490.37x = 7,756,953.46
  5. Step 5: Solve for x
    x = 7,756,953.46/2,490.37
  6. Step 6: Final answer
    x = 3,114.79

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.