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Finding the Fourth Proportional to 78,221.44, 107,944.94 and 44,236.60

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Solution

The fourth proportional to 78,221.44, 107,944.94 and 44,236.60 is: 61,046.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,221.44 : 107,944.94 = 44,236.60 : x
  2. Step 2: Convert to fraction form
    78,221.44/107,944.94 = 44,236.60/x
  3. Step 3: Cross multiply
    78,221.44x = 107,944.94 × 44,236.60
  4. Step 4: Simplify right side
    78,221.44x = 4,775,117,132.80
  5. Step 5: Solve for x
    x = 4,775,117,132.80/78,221.44
  6. Step 6: Final answer
    x = 61,046.14

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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.