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Finding the Fourth Proportional to 621,999.80, 858,403.13 and 350,093.73

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Solution

The fourth proportional to 621,999.80, 858,403.13 and 350,093.73 is: 483,153.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,999.80 : 858,403.13 = 350,093.73 : x
  2. Step 2: Convert to fraction form
    621,999.80/858,403.13 = 350,093.73/x
  3. Step 3: Cross multiply
    621,999.80x = 858,403.13 × 350,093.73
  4. Step 4: Simplify right side
    621,999.80x = 300,521,553,625.38
  5. Step 5: Solve for x
    x = 300,521,553,625.38/621,999.80
  6. Step 6: Final answer
    x = 483,153.78

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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.