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Finding the Fourth Proportional to 61,745.44, 85,203.60 and 34,890.28

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Solution

The fourth proportional to 61,745.44, 85,203.60 and 34,890.28 is: 48,145.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,745.44 : 85,203.60 = 34,890.28 : x
  2. Step 2: Convert to fraction form
    61,745.44/85,203.60 = 34,890.28/x
  3. Step 3: Cross multiply
    61,745.44x = 85,203.60 × 34,890.28
  4. Step 4: Simplify right side
    61,745.44x = 2,972,777,461.01
  5. Step 5: Solve for x
    x = 2,972,777,461.01/61,745.44
  6. Step 6: Final answer
    x = 48,145.70

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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.