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Finding the Fourth Proportional to 55,313.20, 82,921.20 and 33,135.40

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Solution

The fourth proportional to 55,313.20, 82,921.20 and 33,135.40 is: 49,673.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,313.20 : 82,921.20 = 33,135.40 : x
  2. Step 2: Convert to fraction form
    55,313.20/82,921.20 = 33,135.40/x
  3. Step 3: Cross multiply
    55,313.20x = 82,921.20 × 33,135.40
  4. Step 4: Simplify right side
    55,313.20x = 2,747,627,130.48
  5. Step 5: Solve for x
    x = 2,747,627,130.48/55,313.20
  6. Step 6: Final answer
    x = 49,673.99

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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.