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Finding the Fourth Proportional to 967.88, 1,344.94 and 957.86

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Solution

The fourth proportional to 967.88, 1,344.94 and 957.86 is: 1,331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.88 : 1,344.94 = 957.86 : x
  2. Step 2: Convert to fraction form
    967.88/1,344.94 = 957.86/x
  3. Step 3: Cross multiply
    967.88x = 1,344.94 × 957.86
  4. Step 4: Simplify right side
    967.88x = 1,288,264.23
  5. Step 5: Solve for x
    x = 1,288,264.23/967.88
  6. Step 6: Final answer
    x = 1,331.02

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.