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Finding the Fourth Proportional to 352,399.12, 528,593.92 and 86,161.92

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Solution

The fourth proportional to 352,399.12, 528,593.92 and 86,161.92 is: 129,241.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,399.12 : 528,593.92 = 86,161.92 : x
  2. Step 2: Convert to fraction form
    352,399.12/528,593.92 = 86,161.92/x
  3. Step 3: Cross multiply
    352,399.12x = 528,593.92 × 86,161.92
  4. Step 4: Simplify right side
    352,399.12x = 45,544,667,047.53
  5. Step 5: Solve for x
    x = 45,544,667,047.53/352,399.12
  6. Step 6: Final answer
    x = 129,241.72

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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.