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Finding the Fourth Proportional to 19,636.92, 29,463.48 and 7,947.12

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Solution

The fourth proportional to 19,636.92, 29,463.48 and 7,947.12 is: 11,923.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,636.92 : 29,463.48 = 7,947.12 : x
  2. Step 2: Convert to fraction form
    19,636.92/29,463.48 = 7,947.12/x
  3. Step 3: Cross multiply
    19,636.92x = 29,463.48 × 7,947.12
  4. Step 4: Simplify right side
    19,636.92x = 234,149,811.18
  5. Step 5: Solve for x
    x = 234,149,811.18/19,636.92
  6. Step 6: Final answer
    x = 11,923.96

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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.