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Finding the Fourth Proportional to 5,791.80, 8,687.70 and 4,884.60

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Solution

The fourth proportional to 5,791.80, 8,687.70 and 4,884.60 is: 7,326.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791.80 : 8,687.70 = 4,884.60 : x
  2. Step 2: Convert to fraction form
    5,791.80/8,687.70 = 4,884.60/x
  3. Step 3: Cross multiply
    5,791.80x = 8,687.70 × 4,884.60
  4. Step 4: Simplify right side
    5,791.80x = 42,435,939.42
  5. Step 5: Solve for x
    x = 42,435,939.42/5,791.80
  6. Step 6: Final answer
    x = 7,326.90

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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.