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Finding the Fourth Proportional to 18,832.97, 25,994.20 and 10,879.81

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Solution

The fourth proportional to 18,832.97, 25,994.20 and 10,879.81 is: 15,016.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,832.97 : 25,994.20 = 10,879.81 : x
  2. Step 2: Convert to fraction form
    18,832.97/25,994.20 = 10,879.81/x
  3. Step 3: Cross multiply
    18,832.97x = 25,994.20 × 10,879.81
  4. Step 4: Simplify right side
    18,832.97x = 282,812,059.16
  5. Step 5: Solve for x
    x = 282,812,059.16/18,832.97
  6. Step 6: Final answer
    x = 15,016.86

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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.