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Finding the Fourth Proportional to 455,643.90, 682,481.70 and 245,035.80

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Solution

The fourth proportional to 455,643.90, 682,481.70 and 245,035.80 is: 367,024.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,643.90 : 682,481.70 = 245,035.80 : x
  2. Step 2: Convert to fraction form
    455,643.90/682,481.70 = 245,035.80/x
  3. Step 3: Cross multiply
    455,643.90x = 682,481.70 × 245,035.80
  4. Step 4: Simplify right side
    455,643.90x = 167,232,449,344.86
  5. Step 5: Solve for x
    x = 167,232,449,344.86/455,643.90
  6. Step 6: Final answer
    x = 367,024.44

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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.