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Finding the Fourth Proportional to 955.97, 1,434.05 and 835.68

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Solution

The fourth proportional to 955.97, 1,434.05 and 835.68 is: 1,253.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.97 : 1,434.05 = 835.68 : x
  2. Step 2: Convert to fraction form
    955.97/1,434.05 = 835.68/x
  3. Step 3: Cross multiply
    955.97x = 1,434.05 × 835.68
  4. Step 4: Simplify right side
    955.97x = 1,198,402.73
  5. Step 5: Solve for x
    x = 1,198,402.73/955.97
  6. Step 6: Final answer
    x = 1,253.61

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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.