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Finding the Fourth Proportional to 1,762,936.80, 2,644,491.60 and 923,128.80

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Solution

The fourth proportional to 1,762,936.80, 2,644,491.60 and 923,128.80 is: 1,384,738.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,762,936.80 : 2,644,491.60 = 923,128.80 : x
  2. Step 2: Convert to fraction form
    1,762,936.80/2,644,491.60 = 923,128.80/x
  3. Step 3: Cross multiply
    1,762,936.80x = 2,644,491.60 × 923,128.80
  4. Step 4: Simplify right side
    1,762,936.80x = 2,441,206,357,318.08
  5. Step 5: Solve for x
    x = 2,441,206,357,318.08/1,762,936.80
  6. Step 6: Final answer
    x = 1,384,738.44

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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.