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Finding the Fourth Proportional to 68,954.20, 103,431.30 and 33,962.20

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Solution

The fourth proportional to 68,954.20, 103,431.30 and 33,962.20 is: 50,943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,954.20 : 103,431.30 = 33,962.20 : x
  2. Step 2: Convert to fraction form
    68,954.20/103,431.30 = 33,962.20/x
  3. Step 3: Cross multiply
    68,954.20x = 103,431.30 × 33,962.20
  4. Step 4: Simplify right side
    68,954.20x = 3,512,754,496.86
  5. Step 5: Solve for x
    x = 3,512,754,496.86/68,954.20
  6. Step 6: Final answer
    x = 50,943.30

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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.