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Finding the Fourth Proportional to 383,880.87, 575,905.55 and 117,661.41

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Solution

The fourth proportional to 383,880.87, 575,905.55 and 117,661.41 is: 176,517.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,880.87 : 575,905.55 = 117,661.41 : x
  2. Step 2: Convert to fraction form
    383,880.87/575,905.55 = 117,661.41/x
  3. Step 3: Cross multiply
    383,880.87x = 575,905.55 × 117,661.41
  4. Step 4: Simplify right side
    383,880.87x = 67,761,858,451.52
  5. Step 5: Solve for x
    x = 67,761,858,451.52/383,880.87
  6. Step 6: Final answer
    x = 176,517.93

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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.