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Finding the Fourth Proportional to 161,909.66, 242,845.53 and 43,571.69

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Solution

The fourth proportional to 161,909.66, 242,845.53 and 43,571.69 is: 65,352.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,909.66 : 242,845.53 = 43,571.69 : x
  2. Step 2: Convert to fraction form
    161,909.66/242,845.53 = 43,571.69/x
  3. Step 3: Cross multiply
    161,909.66x = 242,845.53 × 43,571.69
  4. Step 4: Simplify right side
    161,909.66x = 10,581,188,936.82
  5. Step 5: Solve for x
    x = 10,581,188,936.82/161,909.66
  6. Step 6: Final answer
    x = 65,352.43

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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.