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Finding the Fourth Proportional to 1,060.12, 1,462.38 and 667

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Solution

The fourth proportional to 1,060.12, 1,462.38 and 667 is: 920.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,060.12 : 1,462.38 = 667 : x
  2. Step 2: Convert to fraction form
    1,060.12/1,462.38 = 667/x
  3. Step 3: Cross multiply
    1,060.12x = 1,462.38 × 667
  4. Step 4: Simplify right side
    1,060.12x = 975,407.46
  5. Step 5: Solve for x
    x = 975,407.46/1,060.12
  6. Step 6: Final answer
    x = 920.09

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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.