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Finding the Fourth Proportional to 18,582.70, 25,655.79 and 16,249.90

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Solution

The fourth proportional to 18,582.70, 25,655.79 and 16,249.90 is: 22,435.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,582.70 : 25,655.79 = 16,249.90 : x
  2. Step 2: Convert to fraction form
    18,582.70/25,655.79 = 16,249.90/x
  3. Step 3: Cross multiply
    18,582.70x = 25,655.79 × 16,249.90
  4. Step 4: Simplify right side
    18,582.70x = 416,904,021.92
  5. Step 5: Solve for x
    x = 416,904,021.92/18,582.70
  6. Step 6: Final answer
    x = 22,435.06

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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.