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Finding the Fourth Proportional to 118,578.68, 177,938.16 and 43,751.44

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Solution

The fourth proportional to 118,578.68, 177,938.16 and 43,751.44 is: 65,653.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,578.68 : 177,938.16 = 43,751.44 : x
  2. Step 2: Convert to fraction form
    118,578.68/177,938.16 = 43,751.44/x
  3. Step 3: Cross multiply
    118,578.68x = 177,938.16 × 43,751.44
  4. Step 4: Simplify right side
    118,578.68x = 7,785,050,730.95
  5. Step 5: Solve for x
    x = 7,785,050,730.95/118,578.68
  6. Step 6: Final answer
    x = 65,653.04

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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.