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Finding the Fourth Proportional to 118,915.78, 178,364.48 and 44,000.78

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Solution

The fourth proportional to 118,915.78, 178,364.48 and 44,000.78 is: 65,997.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,915.78 : 178,364.48 = 44,000.78 : x
  2. Step 2: Convert to fraction form
    118,915.78/178,364.48 = 44,000.78/x
  3. Step 3: Cross multiply
    118,915.78x = 178,364.48 × 44,000.78
  4. Step 4: Simplify right side
    118,915.78x = 7,848,176,244.29
  5. Step 5: Solve for x
    x = 7,848,176,244.29/118,915.78
  6. Step 6: Final answer
    x = 65,997.77

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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.