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Finding the Fourth Proportional to 118,706.78, 178,086.82 and 39,818.98

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Solution

The fourth proportional to 118,706.78, 178,086.82 and 39,818.98 is: 59,737.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,706.78 : 178,086.82 = 39,818.98 : x
  2. Step 2: Convert to fraction form
    118,706.78/178,086.82 = 39,818.98/x
  3. Step 3: Cross multiply
    118,706.78x = 178,086.82 × 39,818.98
  4. Step 4: Simplify right side
    118,706.78x = 7,091,235,523.84
  5. Step 5: Solve for x
    x = 7,091,235,523.84/118,706.78
  6. Step 6: Final answer
    x = 59,737.41

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1.5x scale

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.