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Finding the Fourth Proportional to 60,745.98, 91,020.55 and 45,983.73

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Solution

The fourth proportional to 60,745.98, 91,020.55 and 45,983.73 is: 68,901.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,745.98 : 91,020.55 = 45,983.73 : x
  2. Step 2: Convert to fraction form
    60,745.98/91,020.55 = 45,983.73/x
  3. Step 3: Cross multiply
    60,745.98x = 91,020.55 × 45,983.73
  4. Step 4: Simplify right side
    60,745.98x = 4,185,463,875.59
  5. Step 5: Solve for x
    x = 4,185,463,875.59/60,745.98
  6. Step 6: Final answer
    x = 68,901.09

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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.