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Finding the Fourth Proportional to 68,512.80, 94,559.69 and 39,841.33

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Solution

The fourth proportional to 68,512.80, 94,559.69 and 39,841.33 is: 54,988.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,512.80 : 94,559.69 = 39,841.33 : x
  2. Step 2: Convert to fraction form
    68,512.80/94,559.69 = 39,841.33/x
  3. Step 3: Cross multiply
    68,512.80x = 94,559.69 × 39,841.33
  4. Step 4: Simplify right side
    68,512.80x = 3,767,383,813.99
  5. Step 5: Solve for x
    x = 3,767,383,813.99/68,512.80
  6. Step 6: Final answer
    x = 54,988.03

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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.