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Finding the Fourth Proportional to 1,067.84, 1,611.92 and 1,056.32

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Solution

The fourth proportional to 1,067.84, 1,611.92 and 1,056.32 is: 1,594.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.84 : 1,611.92 = 1,056.32 : x
  2. Step 2: Convert to fraction form
    1,067.84/1,611.92 = 1,056.32/x
  3. Step 3: Cross multiply
    1,067.84x = 1,611.92 × 1,056.32
  4. Step 4: Simplify right side
    1,067.84x = 1,702,703.33
  5. Step 5: Solve for x
    x = 1,702,703.33/1,067.84
  6. Step 6: Final answer
    x = 1,594.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.