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Finding the Fourth Proportional to 104,388.62, 156,443.33 and 54,363.69

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Solution

The fourth proportional to 104,388.62, 156,443.33 and 54,363.69 is: 81,472.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,388.62 : 156,443.33 = 54,363.69 : x
  2. Step 2: Convert to fraction form
    104,388.62/156,443.33 = 54,363.69/x
  3. Step 3: Cross multiply
    104,388.62x = 156,443.33 × 54,363.69
  4. Step 4: Simplify right side
    104,388.62x = 8,504,836,830.60
  5. Step 5: Solve for x
    x = 8,504,836,830.60/104,388.62
  6. Step 6: Final answer
    x = 81,472.84

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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.