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Finding the Fourth Proportional to 118,940.70, 178,411.04 and 40,048.32

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Solution

The fourth proportional to 118,940.70, 178,411.04 and 40,048.32 is: 60,072.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,940.70 : 178,411.04 = 40,048.32 : x
  2. Step 2: Convert to fraction form
    118,940.70/178,411.04 = 40,048.32/x
  3. Step 3: Cross multiply
    118,940.70x = 178,411.04 × 40,048.32
  4. Step 4: Simplify right side
    118,940.70x = 7,145,061,629.52
  5. Step 5: Solve for x
    x = 7,145,061,629.52/118,940.70
  6. Step 6: Final answer
    x = 60,072.47

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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.