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Finding the Fourth Proportional to 316,635.86, 436,768.52 and 274,120.58

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Solution

The fourth proportional to 316,635.86, 436,768.52 and 274,120.58 is: 378,122.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,635.86 : 436,768.52 = 274,120.58 : x
  2. Step 2: Convert to fraction form
    316,635.86/436,768.52 = 274,120.58/x
  3. Step 3: Cross multiply
    316,635.86x = 436,768.52 × 274,120.58
  4. Step 4: Simplify right side
    316,635.86x = 119,727,240,028.14
  5. Step 5: Solve for x
    x = 119,727,240,028.14/316,635.86
  6. Step 6: Final answer
    x = 378,122.81

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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.