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Finding the Fourth Proportional to 118,741.70, 178,121.89 and 34,503.32

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Solution

The fourth proportional to 118,741.70, 178,121.89 and 34,503.32 is: 51,757.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,741.70 : 178,121.89 = 34,503.32 : x
  2. Step 2: Convert to fraction form
    118,741.70/178,121.89 = 34,503.32/x
  3. Step 3: Cross multiply
    118,741.70x = 178,121.89 × 34,503.32
  4. Step 4: Simplify right side
    118,741.70x = 6,145,795,862.09
  5. Step 5: Solve for x
    x = 6,145,795,862.09/118,741.70
  6. Step 6: Final answer
    x = 51,757.69

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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.