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Finding the Fourth Proportional to 392,081.15, 587,174.45 and 223,089.59

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Solution

The fourth proportional to 392,081.15, 587,174.45 and 223,089.59 is: 334,095.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,081.15 : 587,174.45 = 223,089.59 : x
  2. Step 2: Convert to fraction form
    392,081.15/587,174.45 = 223,089.59/x
  3. Step 3: Cross multiply
    392,081.15x = 587,174.45 × 223,089.59
  4. Step 4: Simplify right side
    392,081.15x = 130,992,503,257.66
  5. Step 5: Solve for x
    x = 130,992,503,257.66/392,081.15
  6. Step 6: Final answer
    x = 334,095.39

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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.