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Finding the Fourth Proportional to 373,669.20, 560,503.80 and 321,181.20

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Solution

The fourth proportional to 373,669.20, 560,503.80 and 321,181.20 is: 481,771.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,669.20 : 560,503.80 = 321,181.20 : x
  2. Step 2: Convert to fraction form
    373,669.20/560,503.80 = 321,181.20/x
  3. Step 3: Cross multiply
    373,669.20x = 560,503.80 × 321,181.20
  4. Step 4: Simplify right side
    373,669.20x = 180,023,283,088.56
  5. Step 5: Solve for x
    x = 180,023,283,088.56/373,669.20
  6. Step 6: Final answer
    x = 481,771.80

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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.