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Finding the Fourth Proportional to 100,995.44, 139,357.41 and 60,699.56

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Solution

The fourth proportional to 100,995.44, 139,357.41 and 60,699.56 is: 83,755.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,995.44 : 139,357.41 = 60,699.56 : x
  2. Step 2: Convert to fraction form
    100,995.44/139,357.41 = 60,699.56/x
  3. Step 3: Cross multiply
    100,995.44x = 139,357.41 × 60,699.56
  4. Step 4: Simplify right side
    100,995.44x = 8,458,933,469.74
  5. Step 5: Solve for x
    x = 8,458,933,469.74/100,995.44
  6. Step 6: Final answer
    x = 83,755.60

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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.