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Finding the Fourth Proportional to 441,765.20, 662,647.80 and 386,469.20

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Solution

The fourth proportional to 441,765.20, 662,647.80 and 386,469.20 is: 579,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,765.20 : 662,647.80 = 386,469.20 : x
  2. Step 2: Convert to fraction form
    441,765.20/662,647.80 = 386,469.20/x
  3. Step 3: Cross multiply
    441,765.20x = 662,647.80 × 386,469.20
  4. Step 4: Simplify right side
    441,765.20x = 256,092,965,147.76
  5. Step 5: Solve for x
    x = 256,092,965,147.76/441,765.20
  6. Step 6: Final answer
    x = 579,703.80

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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.