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Finding the Fourth Proportional to 248,901.20, 373,351.80 and 82,689.20

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Solution

The fourth proportional to 248,901.20, 373,351.80 and 82,689.20 is: 124,033.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,901.20 : 373,351.80 = 82,689.20 : x
  2. Step 2: Convert to fraction form
    248,901.20/373,351.80 = 82,689.20/x
  3. Step 3: Cross multiply
    248,901.20x = 373,351.80 × 82,689.20
  4. Step 4: Simplify right side
    248,901.20x = 30,872,161,660.56
  5. Step 5: Solve for x
    x = 30,872,161,660.56/248,901.20
  6. Step 6: Final answer
    x = 124,033.80

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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.