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Finding the Fourth Proportional to 190,019.80, 285,029.70 and 177,578.20

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Solution

The fourth proportional to 190,019.80, 285,029.70 and 177,578.20 is: 266,367.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,019.80 : 285,029.70 = 177,578.20 : x
  2. Step 2: Convert to fraction form
    190,019.80/285,029.70 = 177,578.20/x
  3. Step 3: Cross multiply
    190,019.80x = 285,029.70 × 177,578.20
  4. Step 4: Simplify right side
    190,019.80x = 50,615,061,072.54
  5. Step 5: Solve for x
    x = 50,615,061,072.54/190,019.80
  6. Step 6: Final answer
    x = 266,367.30

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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.