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Finding the Fourth Proportional to 449,612.10, 674,418.15 and 446,987.70

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Solution

The fourth proportional to 449,612.10, 674,418.15 and 446,987.70 is: 670,481.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,612.10 : 674,418.15 = 446,987.70 : x
  2. Step 2: Convert to fraction form
    449,612.10/674,418.15 = 446,987.70/x
  3. Step 3: Cross multiply
    449,612.10x = 674,418.15 × 446,987.70
  4. Step 4: Simplify right side
    449,612.10x = 301,456,617,706.76
  5. Step 5: Solve for x
    x = 301,456,617,706.76/449,612.10
  6. Step 6: Final answer
    x = 670,481.55

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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.