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Finding the Fourth Proportional to 8,474.13, 11,691.75 and 4,936.71

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Solution

The fourth proportional to 8,474.13, 11,691.75 and 4,936.71 is: 6,811.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.13 : 11,691.75 = 4,936.71 : x
  2. Step 2: Convert to fraction form
    8,474.13/11,691.75 = 4,936.71/x
  3. Step 3: Cross multiply
    8,474.13x = 11,691.75 × 4,936.71
  4. Step 4: Simplify right side
    8,474.13x = 57,718,779.14
  5. Step 5: Solve for x
    x = 57,718,779.14/8,474.13
  6. Step 6: Final answer
    x = 6,811.17

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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.