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Finding the Fourth Proportional to 51,236.38, 70,704.75 and 28,576

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Solution

The fourth proportional to 51,236.38, 70,704.75 and 28,576 is: 39,434.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,236.38 : 70,704.75 = 28,576 : x
  2. Step 2: Convert to fraction form
    51,236.38/70,704.75 = 28,576/x
  3. Step 3: Cross multiply
    51,236.38x = 70,704.75 × 28,576
  4. Step 4: Simplify right side
    51,236.38x = 2,020,458,936
  5. Step 5: Solve for x
    x = 2,020,458,936/51,236.38
  6. Step 6: Final answer
    x = 39,434.07

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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.