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Finding the Fourth Proportional to 181,745.85, 272,661.90 and 57,086.85

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Solution

The fourth proportional to 181,745.85, 272,661.90 and 57,086.85 is: 85,643.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,745.85 : 272,661.90 = 57,086.85 : x
  2. Step 2: Convert to fraction form
    181,745.85/272,661.90 = 57,086.85/x
  3. Step 3: Cross multiply
    181,745.85x = 272,661.90 × 57,086.85
  4. Step 4: Simplify right side
    181,745.85x = 15,565,408,986.02
  5. Step 5: Solve for x
    x = 15,565,408,986.02/181,745.85
  6. Step 6: Final answer
    x = 85,643.82

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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.