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Finding the Fourth Proportional to 866.52, 1,193.76 and 677.88

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Solution

The fourth proportional to 866.52, 1,193.76 and 677.88 is: 933.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    866.52 : 1,193.76 = 677.88 : x
  2. Step 2: Convert to fraction form
    866.52/1,193.76 = 677.88/x
  3. Step 3: Cross multiply
    866.52x = 1,193.76 × 677.88
  4. Step 4: Simplify right side
    866.52x = 809,226.03
  5. Step 5: Solve for x
    x = 809,226.03/866.52
  6. Step 6: Final answer
    x = 933.88

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1.5x scale

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.