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Finding the Fourth Proportional to 570,469.80, 855,704.70 and 361,036.20

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Solution

The fourth proportional to 570,469.80, 855,704.70 and 361,036.20 is: 541,554.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,469.80 : 855,704.70 = 361,036.20 : x
  2. Step 2: Convert to fraction form
    570,469.80/855,704.70 = 361,036.20/x
  3. Step 3: Cross multiply
    570,469.80x = 855,704.70 × 361,036.20
  4. Step 4: Simplify right side
    570,469.80x = 308,940,373,210.14
  5. Step 5: Solve for x
    x = 308,940,373,210.14/570,469.80
  6. Step 6: Final answer
    x = 541,554.30

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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.