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Finding the Fourth Proportional to 103,874.40, 155,811.60 and 33,760.80

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Solution

The fourth proportional to 103,874.40, 155,811.60 and 33,760.80 is: 50,641.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,874.40 : 155,811.60 = 33,760.80 : x
  2. Step 2: Convert to fraction form
    103,874.40/155,811.60 = 33,760.80/x
  3. Step 3: Cross multiply
    103,874.40x = 155,811.60 × 33,760.80
  4. Step 4: Simplify right side
    103,874.40x = 5,260,324,265.28
  5. Step 5: Solve for x
    x = 5,260,324,265.28/103,874.40
  6. Step 6: Final answer
    x = 50,641.20

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1.5x scale

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.