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Finding the Fourth Proportional to 69,542.80, 103,729.57 and 63,157.36

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Solution

The fourth proportional to 69,542.80, 103,729.57 and 63,157.36 is: 94,205.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,542.80 : 103,729.57 = 63,157.36 : x
  2. Step 2: Convert to fraction form
    69,542.80/103,729.57 = 63,157.36/x
  3. Step 3: Cross multiply
    69,542.80x = 103,729.57 × 63,157.36
  4. Step 4: Simplify right side
    69,542.80x = 6,551,285,795.14
  5. Step 5: Solve for x
    x = 6,551,285,795.14/69,542.80
  6. Step 6: Final answer
    x = 94,205.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.