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Finding the Fourth Proportional to 573,136.20, 860,579.10 and 440,166.60

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Solution

The fourth proportional to 573,136.20, 860,579.10 and 440,166.60 is: 660,921.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,136.20 : 860,579.10 = 440,166.60 : x
  2. Step 2: Convert to fraction form
    573,136.20/860,579.10 = 440,166.60/x
  3. Step 3: Cross multiply
    573,136.20x = 860,579.10 × 440,166.60
  4. Step 4: Simplify right side
    573,136.20x = 378,798,176,478.06
  5. Step 5: Solve for x
    x = 378,798,176,478.06/573,136.20
  6. Step 6: Final answer
    x = 660,921.74

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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.