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Finding the Fourth Proportional to 98,843.88, 136,467.52 and 64,912.44

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Solution

The fourth proportional to 98,843.88, 136,467.52 and 64,912.44 is: 89,620.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,843.88 : 136,467.52 = 64,912.44 : x
  2. Step 2: Convert to fraction form
    98,843.88/136,467.52 = 64,912.44/x
  3. Step 3: Cross multiply
    98,843.88x = 136,467.52 × 64,912.44
  4. Step 4: Simplify right side
    98,843.88x = 8,858,439,703.95
  5. Step 5: Solve for x
    x = 8,858,439,703.95/98,843.88
  6. Step 6: Final answer
    x = 89,620.52

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1.5x scale

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.