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Finding the Fourth Proportional to 262,840.80, 394,455.60 and 174,064.80

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Solution

The fourth proportional to 262,840.80, 394,455.60 and 174,064.80 is: 261,225.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,840.80 : 394,455.60 = 174,064.80 : x
  2. Step 2: Convert to fraction form
    262,840.80/394,455.60 = 174,064.80/x
  3. Step 3: Cross multiply
    262,840.80x = 394,455.60 × 174,064.80
  4. Step 4: Simplify right side
    262,840.80x = 68,660,835,122.88
  5. Step 5: Solve for x
    x = 68,660,835,122.88/262,840.80
  6. Step 6: Final answer
    x = 261,225.94

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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.