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Finding the Fourth Proportional to 968.15, 1,451.66 and 852.83

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Solution

The fourth proportional to 968.15, 1,451.66 and 852.83 is: 1,278.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.15 : 1,451.66 = 852.83 : x
  2. Step 2: Convert to fraction form
    968.15/1,451.66 = 852.83/x
  3. Step 3: Cross multiply
    968.15x = 1,451.66 × 852.83
  4. Step 4: Simplify right side
    968.15x = 1,238,011.94
  5. Step 5: Solve for x
    x = 1,238,011.94/968.15
  6. Step 6: Final answer
    x = 1,278.75

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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.