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Finding the Fourth Proportional to 103,497.28, 155,213.28 and 33,361.60

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Solution

The fourth proportional to 103,497.28, 155,213.28 and 33,361.60 is: 50,031.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,497.28 : 155,213.28 = 33,361.60 : x
  2. Step 2: Convert to fraction form
    103,497.28/155,213.28 = 33,361.60/x
  3. Step 3: Cross multiply
    103,497.28x = 155,213.28 × 33,361.60
  4. Step 4: Simplify right side
    103,497.28x = 5,178,163,362.05
  5. Step 5: Solve for x
    x = 5,178,163,362.05/103,497.28
  6. Step 6: Final answer
    x = 50,031.88

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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.