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Finding the Fourth Proportional to 51,876.50, 71,122.95 and 50,930.78

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Solution

The fourth proportional to 51,876.50, 71,122.95 and 50,930.78 is: 69,826.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,876.50 : 71,122.95 = 50,930.78 : x
  2. Step 2: Convert to fraction form
    51,876.50/71,122.95 = 50,930.78/x
  3. Step 3: Cross multiply
    51,876.50x = 71,122.95 × 50,930.78
  4. Step 4: Simplify right side
    51,876.50x = 3,622,346,963.79
  5. Step 5: Solve for x
    x = 3,622,346,963.79/51,876.50
  6. Step 6: Final answer
    x = 69,826.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.