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Finding the Fourth Proportional to 247,128.99, 341,074.44 and 156,493.23

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Solution

The fourth proportional to 247,128.99, 341,074.44 and 156,493.23 is: 215,983.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,128.99 : 341,074.44 = 156,493.23 : x
  2. Step 2: Convert to fraction form
    247,128.99/341,074.44 = 156,493.23/x
  3. Step 3: Cross multiply
    247,128.99x = 341,074.44 × 156,493.23
  4. Step 4: Simplify right side
    247,128.99x = 53,375,840,786.04
  5. Step 5: Solve for x
    x = 53,375,840,786.04/247,128.99
  6. Step 6: Final answer
    x = 215,983.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.