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Finding the Fourth Proportional to 1,321,550.30, 1,853,902.90 and 1,321,550.30

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Solution

The fourth proportional to 1,321,550.30, 1,853,902.90 and 1,321,550.30 is: 1,853,902.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,550.30 : 1,853,902.90 = 1,321,550.30 : x
  2. Step 2: Convert to fraction form
    1,321,550.30/1,853,902.90 = 1,321,550.30/x
  3. Step 3: Cross multiply
    1,321,550.30x = 1,853,902.90 × 1,321,550.30
  4. Step 4: Simplify right side
    1,321,550.30x = 2,450,025,933,665.87
  5. Step 5: Solve for x
    x = 2,450,025,933,665.87/1,321,550.30
  6. Step 6: Final answer
    x = 1,853,902.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.