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Finding the Fourth Proportional to 467,172.44, 643,940.79 and 365,019.74

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Solution

The fourth proportional to 467,172.44, 643,940.79 and 365,019.74 is: 503,135.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,172.44 : 643,940.79 = 365,019.74 : x
  2. Step 2: Convert to fraction form
    467,172.44/643,940.79 = 365,019.74/x
  3. Step 3: Cross multiply
    467,172.44x = 643,940.79 × 365,019.74
  4. Step 4: Simplify right side
    467,172.44x = 235,051,099,741.20
  5. Step 5: Solve for x
    x = 235,051,099,741.20/467,172.44
  6. Step 6: Final answer
    x = 503,135.63

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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.