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Finding the Fourth Proportional to 321,315.60, 481,512.60 and 236,413.20

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Solution

The fourth proportional to 321,315.60, 481,512.60 and 236,413.20 is: 354,280.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,315.60 : 481,512.60 = 236,413.20 : x
  2. Step 2: Convert to fraction form
    321,315.60/481,512.60 = 236,413.20/x
  3. Step 3: Cross multiply
    321,315.60x = 481,512.60 × 236,413.20
  4. Step 4: Simplify right side
    321,315.60x = 113,835,934,606.32
  5. Step 5: Solve for x
    x = 113,835,934,606.32/321,315.60
  6. Step 6: Final answer
    x = 354,280.76

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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.