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Finding the Fourth Proportional to 263,816.84, 395,748.62 and 74,278.83

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Solution

The fourth proportional to 263,816.84, 395,748.62 and 74,278.83 is: 111,424.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,816.84 : 395,748.62 = 74,278.83 : x
  2. Step 2: Convert to fraction form
    263,816.84/395,748.62 = 74,278.83/x
  3. Step 3: Cross multiply
    263,816.84x = 395,748.62 × 74,278.83
  4. Step 4: Simplify right side
    263,816.84x = 29,395,744,096.32
  5. Step 5: Solve for x
    x = 29,395,744,096.32/263,816.84
  6. Step 6: Final answer
    x = 111,424.82

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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.