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Finding the Fourth Proportional to 262,550.44, 393,887.74 and 85,057.16

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Solution

The fourth proportional to 262,550.44, 393,887.74 and 85,057.16 is: 127,605.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,550.44 : 393,887.74 = 85,057.16 : x
  2. Step 2: Convert to fraction form
    262,550.44/393,887.74 = 85,057.16/x
  3. Step 3: Cross multiply
    262,550.44x = 393,887.74 × 85,057.16
  4. Step 4: Simplify right side
    262,550.44x = 33,502,972,523.22
  5. Step 5: Solve for x
    x = 33,502,972,523.22/262,550.44
  6. Step 6: Final answer
    x = 127,605.85

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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.