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Finding the Fourth Proportional to 51,608.74, 71,225.75 and 28,949.94

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Solution

The fourth proportional to 51,608.74, 71,225.75 and 28,949.94 is: 39,954.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,608.74 : 71,225.75 = 28,949.94 : x
  2. Step 2: Convert to fraction form
    51,608.74/71,225.75 = 28,949.94/x
  3. Step 3: Cross multiply
    51,608.74x = 71,225.75 × 28,949.94
  4. Step 4: Simplify right side
    51,608.74x = 2,061,981,188.96
  5. Step 5: Solve for x
    x = 2,061,981,188.96/51,608.74
  6. Step 6: Final answer
    x = 39,954.11

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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.