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Finding the Fourth Proportional to 8,650.91, 11,938.89 and 4,874.49

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Solution

The fourth proportional to 8,650.91, 11,938.89 and 4,874.49 is: 6,727.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,650.91 : 11,938.89 = 4,874.49 : x
  2. Step 2: Convert to fraction form
    8,650.91/11,938.89 = 4,874.49/x
  3. Step 3: Cross multiply
    8,650.91x = 11,938.89 × 4,874.49
  4. Step 4: Simplify right side
    8,650.91x = 58,195,999.92
  5. Step 5: Solve for x
    x = 58,195,999.92/8,650.91
  6. Step 6: Final answer
    x = 6,727.16

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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.