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Finding the Fourth Proportional to 413,714.20, 620,644.20 and 147,629.20

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Solution

The fourth proportional to 413,714.20, 620,644.20 and 147,629.20 is: 221,469.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,714.20 : 620,644.20 = 147,629.20 : x
  2. Step 2: Convert to fraction form
    413,714.20/620,644.20 = 147,629.20/x
  3. Step 3: Cross multiply
    413,714.20x = 620,644.20 × 147,629.20
  4. Step 4: Simplify right side
    413,714.20x = 91,625,206,730.64
  5. Step 5: Solve for x
    x = 91,625,206,730.64/413,714.20
  6. Step 6: Final answer
    x = 221,469.81

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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.