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Finding the Fourth Proportional to 372,709.80, 559,064.70 and 254,611.80

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Solution

The fourth proportional to 372,709.80, 559,064.70 and 254,611.80 is: 381,917.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,709.80 : 559,064.70 = 254,611.80 : x
  2. Step 2: Convert to fraction form
    372,709.80/559,064.70 = 254,611.80/x
  3. Step 3: Cross multiply
    372,709.80x = 559,064.70 × 254,611.80
  4. Step 4: Simplify right side
    372,709.80x = 142,344,469,583.46
  5. Step 5: Solve for x
    x = 142,344,469,583.46/372,709.80
  6. Step 6: Final answer
    x = 381,917.70

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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.