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Finding the Fourth Proportional to 290,190.51, 400,649.63 and 199,517.49

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Solution

The fourth proportional to 290,190.51, 400,649.63 and 199,517.49 is: 275,462.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,190.51 : 400,649.63 = 199,517.49 : x
  2. Step 2: Convert to fraction form
    290,190.51/400,649.63 = 199,517.49/x
  3. Step 3: Cross multiply
    290,190.51x = 400,649.63 × 199,517.49
  4. Step 4: Simplify right side
    290,190.51x = 79,936,607,549.44
  5. Step 5: Solve for x
    x = 79,936,607,549.44/290,190.51
  6. Step 6: Final answer
    x = 275,462.51

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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.