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Finding the Fourth Proportional to 321,128.60, 481,692.90 and 96,523.70

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Solution

The fourth proportional to 321,128.60, 481,692.90 and 96,523.70 is: 144,785.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,128.60 : 481,692.90 = 96,523.70 : x
  2. Step 2: Convert to fraction form
    321,128.60/481,692.90 = 96,523.70/x
  3. Step 3: Cross multiply
    321,128.60x = 481,692.90 × 96,523.70
  4. Step 4: Simplify right side
    321,128.60x = 46,494,780,971.73
  5. Step 5: Solve for x
    x = 46,494,780,971.73/321,128.60
  6. Step 6: Final answer
    x = 144,785.55

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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.