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Finding the Fourth Proportional to 58,745.89, 88,144.20 and 21,311.27

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Solution

The fourth proportional to 58,745.89, 88,144.20 and 21,311.27 is: 31,976.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,745.89 : 88,144.20 = 21,311.27 : x
  2. Step 2: Convert to fraction form
    58,745.89/88,144.20 = 21,311.27/x
  3. Step 3: Cross multiply
    58,745.89x = 88,144.20 × 21,311.27
  4. Step 4: Simplify right side
    58,745.89x = 1,878,464,845.13
  5. Step 5: Solve for x
    x = 1,878,464,845.13/58,745.89
  6. Step 6: Final answer
    x = 31,976.11

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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.