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Finding the Fourth Proportional to 1,767.88, 2,435.94 and 1,208.44

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Solution

The fourth proportional to 1,767.88, 2,435.94 and 1,208.44 is: 1,665.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,767.88 : 2,435.94 = 1,208.44 : x
  2. Step 2: Convert to fraction form
    1,767.88/2,435.94 = 1,208.44/x
  3. Step 3: Cross multiply
    1,767.88x = 2,435.94 × 1,208.44
  4. Step 4: Simplify right side
    1,767.88x = 2,943,687.33
  5. Step 5: Solve for x
    x = 2,943,687.33/1,767.88
  6. Step 6: Final answer
    x = 1,665.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.