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Finding the Fourth Proportional to 133,399.20, 200,025.90 and 54,424.20

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Solution

The fourth proportional to 133,399.20, 200,025.90 and 54,424.20 is: 81,606.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,399.20 : 200,025.90 = 54,424.20 : x
  2. Step 2: Convert to fraction form
    133,399.20/200,025.90 = 54,424.20/x
  3. Step 3: Cross multiply
    133,399.20x = 200,025.90 × 54,424.20
  4. Step 4: Simplify right side
    133,399.20x = 10,886,249,586.78
  5. Step 5: Solve for x
    x = 10,886,249,586.78/133,399.20
  6. Step 6: Final answer
    x = 81,606.56

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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.