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Finding the Fourth Proportional to 45,361.80, 68,033.81 and 43,111.42

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Solution

The fourth proportional to 45,361.80, 68,033.81 and 43,111.42 is: 64,658.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,361.80 : 68,033.81 = 43,111.42 : x
  2. Step 2: Convert to fraction form
    45,361.80/68,033.81 = 43,111.42/x
  3. Step 3: Cross multiply
    45,361.80x = 68,033.81 × 43,111.42
  4. Step 4: Simplify right side
    45,361.80x = 2,933,034,094.80
  5. Step 5: Solve for x
    x = 2,933,034,094.80/45,361.80
  6. Step 6: Final answer
    x = 64,658.68

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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.