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Finding the Fourth Proportional to 1,197.84, 1,652.22 and 867

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Solution

The fourth proportional to 1,197.84, 1,652.22 and 867 is: 1,195.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197.84 : 1,652.22 = 867 : x
  2. Step 2: Convert to fraction form
    1,197.84/1,652.22 = 867/x
  3. Step 3: Cross multiply
    1,197.84x = 1,652.22 × 867
  4. Step 4: Simplify right side
    1,197.84x = 1,432,474.74
  5. Step 5: Solve for x
    x = 1,432,474.74/1,197.84
  6. Step 6: Final answer
    x = 1,195.88

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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.