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Finding the Fourth Proportional to 228,861.78, 343,208.40 and 79,063.62

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Solution

The fourth proportional to 228,861.78, 343,208.40 and 79,063.62 is: 118,566.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,861.78 : 343,208.40 = 79,063.62 : x
  2. Step 2: Convert to fraction form
    228,861.78/343,208.40 = 79,063.62/x
  3. Step 3: Cross multiply
    228,861.78x = 343,208.40 × 79,063.62
  4. Step 4: Simplify right side
    228,861.78x = 27,135,298,518.41
  5. Step 5: Solve for x
    x = 27,135,298,518.41/228,861.78
  6. Step 6: Final answer
    x = 118,566.32

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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.