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Finding the Fourth Proportional to 325,092.80, 487,639.20 and 272,604.80

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Solution

The fourth proportional to 325,092.80, 487,639.20 and 272,604.80 is: 408,907.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,092.80 : 487,639.20 = 272,604.80 : x
  2. Step 2: Convert to fraction form
    325,092.80/487,639.20 = 272,604.80/x
  3. Step 3: Cross multiply
    325,092.80x = 487,639.20 × 272,604.80
  4. Step 4: Simplify right side
    325,092.80x = 132,932,786,588.16
  5. Step 5: Solve for x
    x = 132,932,786,588.16/325,092.80
  6. Step 6: Final answer
    x = 408,907.20

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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.