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Finding the Fourth Proportional to 373,517.73, 515,940.64 and 302,166.86

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Solution

The fourth proportional to 373,517.73, 515,940.64 and 302,166.86 is: 417,383.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,517.73 : 515,940.64 = 302,166.86 : x
  2. Step 2: Convert to fraction form
    373,517.73/515,940.64 = 302,166.86/x
  3. Step 3: Cross multiply
    373,517.73x = 515,940.64 × 302,166.86
  4. Step 4: Simplify right side
    373,517.73x = 155,900,159,800.07
  5. Step 5: Solve for x
    x = 155,900,159,800.07/373,517.73
  6. Step 6: Final answer
    x = 417,383.56

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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.