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Finding the Fourth Proportional to 621,190.28, 857,183.51 and 363,127.73

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Solution

The fourth proportional to 621,190.28, 857,183.51 and 363,127.73 is: 501,081.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,190.28 : 857,183.51 = 363,127.73 : x
  2. Step 2: Convert to fraction form
    621,190.28/857,183.51 = 363,127.73/x
  3. Step 3: Cross multiply
    621,190.28x = 857,183.51 × 363,127.73
  4. Step 4: Simplify right side
    621,190.28x = 311,267,098,801.63
  5. Step 5: Solve for x
    x = 311,267,098,801.63/621,190.28
  6. Step 6: Final answer
    x = 501,081.73

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.