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Finding the Fourth Proportional to 8,630.75, 12,948.30 and 2,474.75

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Solution

The fourth proportional to 8,630.75, 12,948.30 and 2,474.75 is: 3,712.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.75 : 12,948.30 = 2,474.75 : x
  2. Step 2: Convert to fraction form
    8,630.75/12,948.30 = 2,474.75/x
  3. Step 3: Cross multiply
    8,630.75x = 12,948.30 × 2,474.75
  4. Step 4: Simplify right side
    8,630.75x = 32,043,805.43
  5. Step 5: Solve for x
    x = 32,043,805.43/8,630.75
  6. Step 6: Final answer
    x = 3,712.75

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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.