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Finding the Fourth Proportional to 52,789.80, 79,191.90 and 17,739.48

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Solution

The fourth proportional to 52,789.80, 79,191.90 and 17,739.48 is: 26,611.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,789.80 : 79,191.90 = 17,739.48 : x
  2. Step 2: Convert to fraction form
    52,789.80/79,191.90 = 17,739.48/x
  3. Step 3: Cross multiply
    52,789.80x = 79,191.90 × 17,739.48
  4. Step 4: Simplify right side
    52,789.80x = 1,404,823,126.21
  5. Step 5: Solve for x
    x = 1,404,823,126.21/52,789.80
  6. Step 6: Final answer
    x = 26,611.64

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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.