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Finding the Fourth Proportional to 265,571.60, 398,584.20 and 107,913.20

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Solution

The fourth proportional to 265,571.60, 398,584.20 and 107,913.20 is: 161,961.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,571.60 : 398,584.20 = 107,913.20 : x
  2. Step 2: Convert to fraction form
    265,571.60/398,584.20 = 107,913.20/x
  3. Step 3: Cross multiply
    265,571.60x = 398,584.20 × 107,913.20
  4. Step 4: Simplify right side
    265,571.60x = 43,012,496,491.44
  5. Step 5: Solve for x
    x = 43,012,496,491.44/265,571.60
  6. Step 6: Final answer
    x = 161,961.96

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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.