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Finding the Fourth Proportional to 103,630.60, 155,442.12 and 33,508

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Solution

The fourth proportional to 103,630.60, 155,442.12 and 33,508 is: 50,260.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,630.60 : 155,442.12 = 33,508 : x
  2. Step 2: Convert to fraction form
    103,630.60/155,442.12 = 33,508/x
  3. Step 3: Cross multiply
    103,630.60x = 155,442.12 × 33,508
  4. Step 4: Simplify right side
    103,630.60x = 5,208,554,556.96
  5. Step 5: Solve for x
    x = 5,208,554,556.96/103,630.60
  6. Step 6: Final answer
    x = 50,260.78

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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.