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Finding the Fourth Proportional to 52,750.62, 79,131.21 and 19,479.42

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Solution

The fourth proportional to 52,750.62, 79,131.21 and 19,479.42 is: 29,221.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,750.62 : 79,131.21 = 19,479.42 : x
  2. Step 2: Convert to fraction form
    52,750.62/79,131.21 = 19,479.42/x
  3. Step 3: Cross multiply
    52,750.62x = 79,131.21 × 19,479.42
  4. Step 4: Simplify right side
    52,750.62x = 1,541,430,074.70
  5. Step 5: Solve for x
    x = 1,541,430,074.70/52,750.62
  6. Step 6: Final answer
    x = 29,221.08

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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.