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Finding the Fourth Proportional to 47,805.20, 71,722.20 and 25,629.20

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Solution

The fourth proportional to 47,805.20, 71,722.20 and 25,629.20 is: 38,451.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,805.20 : 71,722.20 = 25,629.20 : x
  2. Step 2: Convert to fraction form
    47,805.20/71,722.20 = 25,629.20/x
  3. Step 3: Cross multiply
    47,805.20x = 71,722.20 × 25,629.20
  4. Step 4: Simplify right side
    47,805.20x = 1,838,182,608.24
  5. Step 5: Solve for x
    x = 1,838,182,608.24/47,805.20
  6. Step 6: Final answer
    x = 38,451.52

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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.