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Finding the Fourth Proportional to 43,900.80, 65,851.20 and 26,361.60

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Solution

The fourth proportional to 43,900.80, 65,851.20 and 26,361.60 is: 39,542.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,900.80 : 65,851.20 = 26,361.60 : x
  2. Step 2: Convert to fraction form
    43,900.80/65,851.20 = 26,361.60/x
  3. Step 3: Cross multiply
    43,900.80x = 65,851.20 × 26,361.60
  4. Step 4: Simplify right side
    43,900.80x = 1,735,942,993.92
  5. Step 5: Solve for x
    x = 1,735,942,993.92/43,900.80
  6. Step 6: Final answer
    x = 39,542.40

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1.5x scale

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.