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Finding the Fourth Proportional to 170,786.40, 256,083.60 and 65,608.80

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Solution

The fourth proportional to 170,786.40, 256,083.60 and 65,608.80 is: 98,376.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,786.40 : 256,083.60 = 65,608.80 : x
  2. Step 2: Convert to fraction form
    170,786.40/256,083.60 = 65,608.80/x
  3. Step 3: Cross multiply
    170,786.40x = 256,083.60 × 65,608.80
  4. Step 4: Simplify right side
    170,786.40x = 16,801,337,695.68
  5. Step 5: Solve for x
    x = 16,801,337,695.68/170,786.40
  6. Step 6: Final answer
    x = 98,376.32

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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.