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Finding the Fourth Proportional to 316,462.43, 436,718.63 and 173,231.54

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Solution

The fourth proportional to 316,462.43, 436,718.63 and 173,231.54 is: 239,059.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,462.43 : 436,718.63 = 173,231.54 : x
  2. Step 2: Convert to fraction form
    316,462.43/436,718.63 = 173,231.54/x
  3. Step 3: Cross multiply
    316,462.43x = 436,718.63 × 173,231.54
  4. Step 4: Simplify right side
    316,462.43x = 75,653,440,821.59
  5. Step 5: Solve for x
    x = 75,653,440,821.59/316,462.43
  6. Step 6: Final answer
    x = 239,059.79

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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.