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Finding the Fourth Proportional to 98,865.99, 148,324.26 and 28,745.30

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Solution

The fourth proportional to 98,865.99, 148,324.26 and 28,745.30 is: 43,125.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,865.99 : 148,324.26 = 28,745.30 : x
  2. Step 2: Convert to fraction form
    98,865.99/148,324.26 = 28,745.30/x
  3. Step 3: Cross multiply
    98,865.99x = 148,324.26 × 28,745.30
  4. Step 4: Simplify right side
    98,865.99x = 4,263,625,829.58
  5. Step 5: Solve for x
    x = 4,263,625,829.58/98,865.99
  6. Step 6: Final answer
    x = 43,125.30

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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.