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Finding the Fourth Proportional to 51,240.65, 70,685.21 and 41,691.21

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Solution

The fourth proportional to 51,240.65, 70,685.21 and 41,691.21 is: 57,511.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,240.65 : 70,685.21 = 41,691.21 : x
  2. Step 2: Convert to fraction form
    51,240.65/70,685.21 = 41,691.21/x
  3. Step 3: Cross multiply
    51,240.65x = 70,685.21 × 41,691.21
  4. Step 4: Simplify right side
    51,240.65x = 2,946,951,548.84
  5. Step 5: Solve for x
    x = 2,946,951,548.84/51,240.65
  6. Step 6: Final answer
    x = 57,511.99

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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.