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Finding the Fourth Proportional to 212,361.44, 318,542.14 and 54,590.04

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Solution

The fourth proportional to 212,361.44, 318,542.14 and 54,590.04 is: 81,885.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,361.44 : 318,542.14 = 54,590.04 : x
  2. Step 2: Convert to fraction form
    212,361.44/318,542.14 = 54,590.04/x
  3. Step 3: Cross multiply
    212,361.44x = 318,542.14 × 54,590.04
  4. Step 4: Simplify right side
    212,361.44x = 17,389,228,164.29
  5. Step 5: Solve for x
    x = 17,389,228,164.29/212,361.44
  6. Step 6: Final answer
    x = 81,885.05

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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.