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Finding the Fourth Proportional to 311,568.58, 467,352.87 and 74,911.25

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Solution

The fourth proportional to 311,568.58, 467,352.87 and 74,911.25 is: 112,366.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,568.58 : 467,352.87 = 74,911.25 : x
  2. Step 2: Convert to fraction form
    311,568.58/467,352.87 = 74,911.25/x
  3. Step 3: Cross multiply
    311,568.58x = 467,352.87 × 74,911.25
  4. Step 4: Simplify right side
    311,568.58x = 35,009,987,682.79
  5. Step 5: Solve for x
    x = 35,009,987,682.79/311,568.58
  6. Step 6: Final answer
    x = 112,366.88

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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.