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Finding the Fourth Proportional to 118,704.84, 177,934.20 and 74,229.50

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Solution

The fourth proportional to 118,704.84, 177,934.20 and 74,229.50 is: 111,267.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,704.84 : 177,934.20 = 74,229.50 : x
  2. Step 2: Convert to fraction form
    118,704.84/177,934.20 = 74,229.50/x
  3. Step 3: Cross multiply
    118,704.84x = 177,934.20 × 74,229.50
  4. Step 4: Simplify right side
    118,704.84x = 13,207,966,698.90
  5. Step 5: Solve for x
    x = 13,207,966,698.90/118,704.84
  6. Step 6: Final answer
    x = 111,267.30

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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.