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Finding the Fourth Proportional to 56,791.80, 85,197.84 and 19,349.80

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Solution

The fourth proportional to 56,791.80, 85,197.84 and 19,349.80 is: 29,028.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,791.80 : 85,197.84 = 19,349.80 : x
  2. Step 2: Convert to fraction form
    56,791.80/85,197.84 = 19,349.80/x
  3. Step 3: Cross multiply
    56,791.80x = 85,197.84 × 19,349.80
  4. Step 4: Simplify right side
    56,791.80x = 1,648,561,164.43
  5. Step 5: Solve for x
    x = 1,648,561,164.43/56,791.80
  6. Step 6: Final answer
    x = 29,028.15

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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.