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Finding the Fourth Proportional to 419,611.14, 579,055.98 and 228,625.86

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Solution

The fourth proportional to 419,611.14, 579,055.98 and 228,625.86 is: 315,499.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,611.14 : 579,055.98 = 228,625.86 : x
  2. Step 2: Convert to fraction form
    419,611.14/579,055.98 = 228,625.86/x
  3. Step 3: Cross multiply
    419,611.14x = 579,055.98 × 228,625.86
  4. Step 4: Simplify right side
    419,611.14x = 132,387,171,415.64
  5. Step 5: Solve for x
    x = 132,387,171,415.64/419,611.14
  6. Step 6: Final answer
    x = 315,499.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.