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Finding the Fourth Proportional to 316,364.67, 436,583.25 and 173,124.72

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Solution

The fourth proportional to 316,364.67, 436,583.25 and 173,124.72 is: 238,912.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,364.67 : 436,583.25 = 173,124.72 : x
  2. Step 2: Convert to fraction form
    316,364.67/436,583.25 = 173,124.72/x
  3. Step 3: Cross multiply
    316,364.67x = 436,583.25 × 173,124.72
  4. Step 4: Simplify right side
    316,364.67x = 75,583,352,912.94
  5. Step 5: Solve for x
    x = 75,583,352,912.94/316,364.67
  6. Step 6: Final answer
    x = 238,912.12

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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.