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Finding the Fourth Proportional to 573,138.20, 860,582.10 and 440,168.60

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Solution

The fourth proportional to 573,138.20, 860,582.10 and 440,168.60 is: 660,924.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,138.20 : 860,582.10 = 440,168.60 : x
  2. Step 2: Convert to fraction form
    573,138.20/860,582.10 = 440,168.60/x
  3. Step 3: Cross multiply
    573,138.20x = 860,582.10 × 440,168.60
  4. Step 4: Simplify right side
    573,138.20x = 378,801,218,142.06
  5. Step 5: Solve for x
    x = 378,801,218,142.06/573,138.20
  6. Step 6: Final answer
    x = 660,924.74

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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.