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Finding the Fourth Proportional to 45,755.20, 68,671.20 and 22,401.60

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Solution

The fourth proportional to 45,755.20, 68,671.20 and 22,401.60 is: 33,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,755.20 : 68,671.20 = 22,401.60 : x
  2. Step 2: Convert to fraction form
    45,755.20/68,671.20 = 22,401.60/x
  3. Step 3: Cross multiply
    45,755.20x = 68,671.20 × 22,401.60
  4. Step 4: Simplify right side
    45,755.20x = 1,538,344,753.92
  5. Step 5: Solve for x
    x = 1,538,344,753.92/45,755.20
  6. Step 6: Final answer
    x = 33,621.20

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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.