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Finding the Fourth Proportional to 303,889.44, 419,377.76 and 190,774.56

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Solution

The fourth proportional to 303,889.44, 419,377.76 and 190,774.56 is: 263,275.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,889.44 : 419,377.76 = 190,774.56 : x
  2. Step 2: Convert to fraction form
    303,889.44/419,377.76 = 190,774.56/x
  3. Step 3: Cross multiply
    303,889.44x = 419,377.76 × 190,774.56
  4. Step 4: Simplify right side
    303,889.44x = 80,006,607,637.79
  5. Step 5: Solve for x
    x = 80,006,607,637.79/303,889.44
  6. Step 6: Final answer
    x = 263,275.38

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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.