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Finding the Fourth Proportional to 391,481.15, 587,233.91 and 186,270.84

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Solution

The fourth proportional to 391,481.15, 587,233.91 and 186,270.84 is: 279,412.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,481.15 : 587,233.91 = 186,270.84 : x
  2. Step 2: Convert to fraction form
    391,481.15/587,233.91 = 186,270.84/x
  3. Step 3: Cross multiply
    391,481.15x = 587,233.91 × 186,270.84
  4. Step 4: Simplify right side
    391,481.15x = 109,384,553,692.18
  5. Step 5: Solve for x
    x = 109,384,553,692.18/391,481.15
  6. Step 6: Final answer
    x = 279,412.06

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1.5x scale

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.