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Finding the Fourth Proportional to 69,047.22, 103,573.12 and 19,127.82

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Solution

The fourth proportional to 69,047.22, 103,573.12 and 19,127.82 is: 28,692.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,047.22 : 103,573.12 = 19,127.82 : x
  2. Step 2: Convert to fraction form
    69,047.22/103,573.12 = 19,127.82/x
  3. Step 3: Cross multiply
    69,047.22x = 103,573.12 × 19,127.82
  4. Step 4: Simplify right side
    69,047.22x = 1,981,127,996.20
  5. Step 5: Solve for x
    x = 1,981,127,996.20/69,047.22
  6. Step 6: Final answer
    x = 28,692.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.