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Finding the Fourth Proportional to 966.66, 1,447.56 and 852.48

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Solution

The fourth proportional to 966.66, 1,447.56 and 852.48 is: 1,276.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.66 : 1,447.56 = 852.48 : x
  2. Step 2: Convert to fraction form
    966.66/1,447.56 = 852.48/x
  3. Step 3: Cross multiply
    966.66x = 1,447.56 × 852.48
  4. Step 4: Simplify right side
    966.66x = 1,234,015.95
  5. Step 5: Solve for x
    x = 1,234,015.95/966.66
  6. Step 6: Final answer
    x = 1,276.58

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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.