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Finding the Fourth Proportional to 529,048.80, 793,573.20 and 280,216.80

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Solution

The fourth proportional to 529,048.80, 793,573.20 and 280,216.80 is: 420,325.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,048.80 : 793,573.20 = 280,216.80 : x
  2. Step 2: Convert to fraction form
    529,048.80/793,573.20 = 280,216.80/x
  3. Step 3: Cross multiply
    529,048.80x = 793,573.20 × 280,216.80
  4. Step 4: Simplify right side
    529,048.80x = 222,372,542,669.76
  5. Step 5: Solve for x
    x = 222,372,542,669.76/529,048.80
  6. Step 6: Final answer
    x = 420,325.20

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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.