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Finding the Fourth Proportional to 1,911.89, 2,861 and 1,498.18

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Solution

The fourth proportional to 1,911.89, 2,861 and 1,498.18 is: 2,241.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.89 : 2,861 = 1,498.18 : x
  2. Step 2: Convert to fraction form
    1,911.89/2,861 = 1,498.18/x
  3. Step 3: Cross multiply
    1,911.89x = 2,861 × 1,498.18
  4. Step 4: Simplify right side
    1,911.89x = 4,286,292.98
  5. Step 5: Solve for x
    x = 4,286,292.98/1,911.89
  6. Step 6: Final answer
    x = 2,241.91

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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.