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Finding the Fourth Proportional to 263,958.40, 395,933.48 and 64,278.45

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Solution

The fourth proportional to 263,958.40, 395,933.48 and 64,278.45 is: 96,416.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,958.40 : 395,933.48 = 64,278.45 : x
  2. Step 2: Convert to fraction form
    263,958.40/395,933.48 = 64,278.45/x
  3. Step 3: Cross multiply
    263,958.40x = 395,933.48 × 64,278.45
  4. Step 4: Simplify right side
    263,958.40x = 25,449,990,076.11
  5. Step 5: Solve for x
    x = 25,449,990,076.11/263,958.40
  6. Step 6: Final answer
    x = 96,416.67

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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.