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Finding the Fourth Proportional to 193,429.80, 290,144.70 and 127,074.60

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Solution

The fourth proportional to 193,429.80, 290,144.70 and 127,074.60 is: 190,611.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,429.80 : 290,144.70 = 127,074.60 : x
  2. Step 2: Convert to fraction form
    193,429.80/290,144.70 = 127,074.60/x
  3. Step 3: Cross multiply
    193,429.80x = 290,144.70 × 127,074.60
  4. Step 4: Simplify right side
    193,429.80x = 36,870,021,694.62
  5. Step 5: Solve for x
    x = 36,870,021,694.62/193,429.80
  6. Step 6: Final answer
    x = 190,611.90

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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.