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Finding the Fourth Proportional to 303,997.86, 419,459.31 and 190,769.58

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Solution

The fourth proportional to 303,997.86, 419,459.31 and 190,769.58 is: 263,225.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,997.86 : 419,459.31 = 190,769.58 : x
  2. Step 2: Convert to fraction form
    303,997.86/419,459.31 = 190,769.58/x
  3. Step 3: Cross multiply
    303,997.86x = 419,459.31 × 190,769.58
  4. Step 4: Simplify right side
    303,997.86x = 80,020,076,395.79
  5. Step 5: Solve for x
    x = 80,020,076,395.79/303,997.86
  6. Step 6: Final answer
    x = 263,225.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.