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Finding the Fourth Proportional to 263,940.36, 395,911.32 and 64,260.72

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Solution

The fourth proportional to 263,940.36, 395,911.32 and 64,260.72 is: 96,391.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,940.36 : 395,911.32 = 64,260.72 : x
  2. Step 2: Convert to fraction form
    263,940.36/395,911.32 = 64,260.72/x
  3. Step 3: Cross multiply
    263,940.36x = 395,911.32 × 64,260.72
  4. Step 4: Simplify right side
    263,940.36x = 25,441,546,479.35
  5. Step 5: Solve for x
    x = 25,441,546,479.35/263,940.36
  6. Step 6: Final answer
    x = 96,391.27

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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.