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Finding the Fourth Proportional to 133,725.40, 200,523.30 and 74,498.20

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Solution

The fourth proportional to 133,725.40, 200,523.30 and 74,498.20 is: 111,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,725.40 : 200,523.30 = 74,498.20 : x
  2. Step 2: Convert to fraction form
    133,725.40/200,523.30 = 74,498.20/x
  3. Step 3: Cross multiply
    133,725.40x = 200,523.30 × 74,498.20
  4. Step 4: Simplify right side
    133,725.40x = 14,938,624,908.06
  5. Step 5: Solve for x
    x = 14,938,624,908.06/133,725.40
  6. Step 6: Final answer
    x = 111,711.20

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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.