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Finding the Fourth Proportional to 322,405.20, 483,607.80 and 125,413.20

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Solution

The fourth proportional to 322,405.20, 483,607.80 and 125,413.20 is: 188,119.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,405.20 : 483,607.80 = 125,413.20 : x
  2. Step 2: Convert to fraction form
    322,405.20/483,607.80 = 125,413.20/x
  3. Step 3: Cross multiply
    322,405.20x = 483,607.80 × 125,413.20
  4. Step 4: Simplify right side
    322,405.20x = 60,650,801,742.96
  5. Step 5: Solve for x
    x = 60,650,801,742.96/322,405.20
  6. Step 6: Final answer
    x = 188,119.80

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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.