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Finding the Fourth Proportional to 103,762.20, 155,643.30 and 33,640.60

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Solution

The fourth proportional to 103,762.20, 155,643.30 and 33,640.60 is: 50,460.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,762.20 : 155,643.30 = 33,640.60 : x
  2. Step 2: Convert to fraction form
    103,762.20/155,643.30 = 33,640.60/x
  3. Step 3: Cross multiply
    103,762.20x = 155,643.30 × 33,640.60
  4. Step 4: Simplify right side
    103,762.20x = 5,235,933,997.98
  5. Step 5: Solve for x
    x = 5,235,933,997.98/103,762.20
  6. Step 6: Final answer
    x = 50,460.90

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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.