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Finding the Fourth Proportional to 19,994.92, 29,991.57 and 6,143.92

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Solution

The fourth proportional to 19,994.92, 29,991.57 and 6,143.92 is: 9,215.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,994.92 : 29,991.57 = 6,143.92 : x
  2. Step 2: Convert to fraction form
    19,994.92/29,991.57 = 6,143.92/x
  3. Step 3: Cross multiply
    19,994.92x = 29,991.57 × 6,143.92
  4. Step 4: Simplify right side
    19,994.92x = 184,265,806.75
  5. Step 5: Solve for x
    x = 184,265,806.75/19,994.92
  6. Step 6: Final answer
    x = 9,215.63

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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.