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Finding the Fourth Proportional to 404,628.10, 606,942.15 and 255,037.30

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Solution

The fourth proportional to 404,628.10, 606,942.15 and 255,037.30 is: 382,555.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,628.10 : 606,942.15 = 255,037.30 : x
  2. Step 2: Convert to fraction form
    404,628.10/606,942.15 = 255,037.30/x
  3. Step 3: Cross multiply
    404,628.10x = 606,942.15 × 255,037.30
  4. Step 4: Simplify right side
    404,628.10x = 154,792,887,192.20
  5. Step 5: Solve for x
    x = 154,792,887,192.20/404,628.10
  6. Step 6: Final answer
    x = 382,555.95

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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.