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Finding the Fourth Proportional to 956.88, 1,318.77 and 694.44

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Solution

The fourth proportional to 956.88, 1,318.77 and 694.44 is: 957.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.88 : 1,318.77 = 694.44 : x
  2. Step 2: Convert to fraction form
    956.88/1,318.77 = 694.44/x
  3. Step 3: Cross multiply
    956.88x = 1,318.77 × 694.44
  4. Step 4: Simplify right side
    956.88x = 915,806.64
  5. Step 5: Solve for x
    x = 915,806.64/956.88
  6. Step 6: Final answer
    x = 957.08

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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.