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Finding the Fourth Proportional to 352,395.86, 528,589.07 and 86,158.67

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Solution

The fourth proportional to 352,395.86, 528,589.07 and 86,158.67 is: 129,236.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,395.86 : 528,589.07 = 86,158.67 : x
  2. Step 2: Convert to fraction form
    352,395.86/528,589.07 = 86,158.67/x
  3. Step 3: Cross multiply
    352,395.86x = 528,589.07 × 86,158.67
  4. Step 4: Simplify right side
    352,395.86x = 45,542,530,816.94
  5. Step 5: Solve for x
    x = 45,542,530,816.94/352,395.86
  6. Step 6: Final answer
    x = 129,236.85

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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.