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Finding the Fourth Proportional to 69,907.98, 104,774.40 and 55,058.25

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Solution

The fourth proportional to 69,907.98, 104,774.40 and 55,058.25 is: 82,518.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,907.98 : 104,774.40 = 55,058.25 : x
  2. Step 2: Convert to fraction form
    69,907.98/104,774.40 = 55,058.25/x
  3. Step 3: Cross multiply
    69,907.98x = 104,774.40 × 55,058.25
  4. Step 4: Simplify right side
    69,907.98x = 5,768,695,108.80
  5. Step 5: Solve for x
    x = 5,768,695,108.80/69,907.98
  6. Step 6: Final answer
    x = 82,518.41

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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.