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Finding the Fourth Proportional to 118,704.39, 178,083.25 and 39,816.60

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Solution

The fourth proportional to 118,704.39, 178,083.25 and 39,816.60 is: 59,733.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,704.39 : 178,083.25 = 39,816.60 : x
  2. Step 2: Convert to fraction form
    118,704.39/178,083.25 = 39,816.60/x
  3. Step 3: Cross multiply
    118,704.39x = 178,083.25 × 39,816.60
  4. Step 4: Simplify right side
    118,704.39x = 7,090,669,531.95
  5. Step 5: Solve for x
    x = 7,090,669,531.95/118,704.39
  6. Step 6: Final answer
    x = 59,733.84

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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.