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Finding the Fourth Proportional to 260,745.48, 391,118.22 and 136,057.32

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Solution

The fourth proportional to 260,745.48, 391,118.22 and 136,057.32 is: 204,085.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,745.48 : 391,118.22 = 136,057.32 : x
  2. Step 2: Convert to fraction form
    260,745.48/391,118.22 = 136,057.32/x
  3. Step 3: Cross multiply
    260,745.48x = 391,118.22 × 136,057.32
  4. Step 4: Simplify right side
    260,745.48x = 53,214,496,816.37
  5. Step 5: Solve for x
    x = 53,214,496,816.37/260,745.48
  6. Step 6: Final answer
    x = 204,085.98

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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.