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Finding the Fourth Proportional to 383,620.05, 575,408.88 and 117,380.61

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Solution

The fourth proportional to 383,620.05, 575,408.88 and 117,380.61 is: 176,064.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,620.05 : 575,408.88 = 117,380.61 : x
  2. Step 2: Convert to fraction form
    383,620.05/575,408.88 = 117,380.61/x
  3. Step 3: Cross multiply
    383,620.05x = 575,408.88 × 117,380.61
  4. Step 4: Simplify right side
    383,620.05x = 67,541,845,333.82
  5. Step 5: Solve for x
    x = 67,541,845,333.82/383,620.05
  6. Step 6: Final answer
    x = 176,064.43

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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.