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Finding the Fourth Proportional to 403,039.20, 604,947.60 and 203,584.80

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Solution

The fourth proportional to 403,039.20, 604,947.60 and 203,584.80 is: 305,573.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,039.20 : 604,947.60 = 203,584.80 : x
  2. Step 2: Convert to fraction form
    403,039.20/604,947.60 = 203,584.80/x
  3. Step 3: Cross multiply
    403,039.20x = 604,947.60 × 203,584.80
  4. Step 4: Simplify right side
    403,039.20x = 123,158,136,156.48
  5. Step 5: Solve for x
    x = 123,158,136,156.48/403,039.20
  6. Step 6: Final answer
    x = 305,573.59

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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.