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Finding the Fourth Proportional to 25,832.80, 38,662.80 and 18,056.80

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Solution

The fourth proportional to 25,832.80, 38,662.80 and 18,056.80 is: 27,024.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,832.80 : 38,662.80 = 18,056.80 : x
  2. Step 2: Convert to fraction form
    25,832.80/38,662.80 = 18,056.80/x
  3. Step 3: Cross multiply
    25,832.80x = 38,662.80 × 18,056.80
  4. Step 4: Simplify right side
    25,832.80x = 698,126,447.04
  5. Step 5: Solve for x
    x = 698,126,447.04/25,832.80
  6. Step 6: Final answer
    x = 27,024.81

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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.