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Finding the Fourth Proportional to 79,245.55, 109,361.57 and 43,435.55

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Solution

The fourth proportional to 79,245.55, 109,361.57 and 43,435.55 is: 59,942.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,245.55 : 109,361.57 = 43,435.55 : x
  2. Step 2: Convert to fraction form
    79,245.55/109,361.57 = 43,435.55/x
  3. Step 3: Cross multiply
    79,245.55x = 109,361.57 × 43,435.55
  4. Step 4: Simplify right side
    79,245.55x = 4,750,179,587.93
  5. Step 5: Solve for x
    x = 4,750,179,587.93/79,245.55
  6. Step 6: Final answer
    x = 59,942.54

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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.