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Finding the Fourth Proportional to 51,607.94, 71,219.74 and 28,951.96

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Solution

The fourth proportional to 51,607.94, 71,219.74 and 28,951.96 is: 39,954.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,607.94 : 71,219.74 = 28,951.96 : x
  2. Step 2: Convert to fraction form
    51,607.94/71,219.74 = 28,951.96/x
  3. Step 3: Cross multiply
    51,607.94x = 71,219.74 × 28,951.96
  4. Step 4: Simplify right side
    51,607.94x = 2,061,951,063.69
  5. Step 5: Solve for x
    x = 2,061,951,063.69/51,607.94
  6. Step 6: Final answer
    x = 39,954.14

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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.