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Finding the Fourth Proportional to 228,934.80, 343,402.20 and 104,518.80

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Solution

The fourth proportional to 228,934.80, 343,402.20 and 104,518.80 is: 156,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,934.80 : 343,402.20 = 104,518.80 : x
  2. Step 2: Convert to fraction form
    228,934.80/343,402.20 = 104,518.80/x
  3. Step 3: Cross multiply
    228,934.80x = 343,402.20 × 104,518.80
  4. Step 4: Simplify right side
    228,934.80x = 35,891,985,861.36
  5. Step 5: Solve for x
    x = 35,891,985,861.36/228,934.80
  6. Step 6: Final answer
    x = 156,778.20

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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.