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Finding the Fourth Proportional to 955.48, 1,433.94 and 667.12

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Solution

The fourth proportional to 955.48, 1,433.94 and 667.12 is: 1,001.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.48 : 1,433.94 = 667.12 : x
  2. Step 2: Convert to fraction form
    955.48/1,433.94 = 667.12/x
  3. Step 3: Cross multiply
    955.48x = 1,433.94 × 667.12
  4. Step 4: Simplify right side
    955.48x = 956,610.05
  5. Step 5: Solve for x
    x = 956,610.05/955.48
  6. Step 6: Final answer
    x = 1,001.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.