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Finding the Fourth Proportional to 1,773.75, 2,660.39 and 541.05

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Solution

The fourth proportional to 1,773.75, 2,660.39 and 541.05 is: 811.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,773.75 : 2,660.39 = 541.05 : x
  2. Step 2: Convert to fraction form
    1,773.75/2,660.39 = 541.05/x
  3. Step 3: Cross multiply
    1,773.75x = 2,660.39 × 541.05
  4. Step 4: Simplify right side
    1,773.75x = 1,439,418.85
  5. Step 5: Solve for x
    x = 1,439,418.85/1,773.75
  6. Step 6: Final answer
    x = 811.51

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Why These Related Problems?

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