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Finding the Fourth Proportional to 5,751.57, 8,631.65 and 4,274.20

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Solution

The fourth proportional to 5,751.57, 8,631.65 and 4,274.20 is: 6,414.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,751.57 : 8,631.65 = 4,274.20 : x
  2. Step 2: Convert to fraction form
    5,751.57/8,631.65 = 4,274.20/x
  3. Step 3: Cross multiply
    5,751.57x = 8,631.65 × 4,274.20
  4. Step 4: Simplify right side
    5,751.57x = 36,893,398.43
  5. Step 5: Solve for x
    x = 36,893,398.43/5,751.57
  6. Step 6: Final answer
    x = 6,414.49

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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.