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Finding the Fourth Proportional to 2,966.31, 4,449.80 and 886.43

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Solution

The fourth proportional to 2,966.31, 4,449.80 and 886.43 is: 1,329.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,966.31 : 4,449.80 = 886.43 : x
  2. Step 2: Convert to fraction form
    2,966.31/4,449.80 = 886.43/x
  3. Step 3: Cross multiply
    2,966.31x = 4,449.80 × 886.43
  4. Step 4: Simplify right side
    2,966.31x = 3,944,449.55
  5. Step 5: Solve for x
    x = 3,944,449.55/2,966.31
  6. Step 6: Final answer
    x = 1,329.75

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1.5x scale

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.