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Finding the Fourth Proportional to 109,893.80, 164,819.10 and 36,021.80

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Solution

The fourth proportional to 109,893.80, 164,819.10 and 36,021.80 is: 54,025.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,893.80 : 164,819.10 = 36,021.80 : x
  2. Step 2: Convert to fraction form
    109,893.80/164,819.10 = 36,021.80/x
  3. Step 3: Cross multiply
    109,893.80x = 164,819.10 × 36,021.80
  4. Step 4: Simplify right side
    109,893.80x = 5,937,080,656.38
  5. Step 5: Solve for x
    x = 5,937,080,656.38/109,893.80
  6. Step 6: Final answer
    x = 54,025.62

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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.