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Finding the Fourth Proportional to 1,067.94, 1,474.16 and 625.84

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Solution

The fourth proportional to 1,067.94, 1,474.16 and 625.84 is: 863.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.94 : 1,474.16 = 625.84 : x
  2. Step 2: Convert to fraction form
    1,067.94/1,474.16 = 625.84/x
  3. Step 3: Cross multiply
    1,067.94x = 1,474.16 × 625.84
  4. Step 4: Simplify right side
    1,067.94x = 922,588.29
  5. Step 5: Solve for x
    x = 922,588.29/1,067.94
  6. Step 6: Final answer
    x = 863.90

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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.