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Finding the Fourth Proportional to 263,963.20, 395,944.80 and 248,411.20

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Solution

The fourth proportional to 263,963.20, 395,944.80 and 248,411.20 is: 372,616.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,963.20 : 395,944.80 = 248,411.20 : x
  2. Step 2: Convert to fraction form
    263,963.20/395,944.80 = 248,411.20/x
  3. Step 3: Cross multiply
    263,963.20x = 395,944.80 × 248,411.20
  4. Step 4: Simplify right side
    263,963.20x = 98,357,122,901.76
  5. Step 5: Solve for x
    x = 98,357,122,901.76/263,963.20
  6. Step 6: Final answer
    x = 372,616.80

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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.