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Finding the Fourth Proportional to 482,161.86, 665,405.28 and 275,448.44

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Solution

The fourth proportional to 482,161.86, 665,405.28 and 275,448.44 is: 380,131.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,161.86 : 665,405.28 = 275,448.44 : x
  2. Step 2: Convert to fraction form
    482,161.86/665,405.28 = 275,448.44/x
  3. Step 3: Cross multiply
    482,161.86x = 665,405.28 × 275,448.44
  4. Step 4: Simplify right side
    482,161.86x = 183,284,846,343.76
  5. Step 5: Solve for x
    x = 183,284,846,343.76/482,161.86
  6. Step 6: Final answer
    x = 380,131.37

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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.