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Finding the Fourth Proportional to 73,745.12, 101,739.36 and 45,401.60

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Solution

The fourth proportional to 73,745.12, 101,739.36 and 45,401.60 is: 62,636.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,745.12 : 101,739.36 = 45,401.60 : x
  2. Step 2: Convert to fraction form
    73,745.12/101,739.36 = 45,401.60/x
  3. Step 3: Cross multiply
    73,745.12x = 101,739.36 × 45,401.60
  4. Step 4: Simplify right side
    73,745.12x = 4,619,129,726.98
  5. Step 5: Solve for x
    x = 4,619,129,726.98/73,745.12
  6. Step 6: Final answer
    x = 62,636.41

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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.