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Finding the Fourth Proportional to 387,656.01, 581,843.84 and 198,251.73

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Solution

The fourth proportional to 387,656.01, 581,843.84 and 198,251.73 is: 297,561.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,656.01 : 581,843.84 = 198,251.73 : x
  2. Step 2: Convert to fraction form
    387,656.01/581,843.84 = 198,251.73/x
  3. Step 3: Cross multiply
    387,656.01x = 581,843.84 × 198,251.73
  4. Step 4: Simplify right side
    387,656.01x = 115,351,546,878.59
  5. Step 5: Solve for x
    x = 115,351,546,878.59/387,656.01
  6. Step 6: Final answer
    x = 297,561.61

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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.