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Finding the Fourth Proportional to 218,909.52, 327,889.08 and 134,413.20

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Solution

The fourth proportional to 218,909.52, 327,889.08 and 134,413.20 is: 201,328.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,909.52 : 327,889.08 = 134,413.20 : x
  2. Step 2: Convert to fraction form
    218,909.52/327,889.08 = 134,413.20/x
  3. Step 3: Cross multiply
    218,909.52x = 327,889.08 × 134,413.20
  4. Step 4: Simplify right side
    218,909.52x = 44,072,620,487.86
  5. Step 5: Solve for x
    x = 44,072,620,487.86/218,909.52
  6. Step 6: Final answer
    x = 201,328.02

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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.