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Finding the Fourth Proportional to 322,978,412.80, 484,467,619.20 and 322,978,412.80

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Solution

The fourth proportional to 322,978,412.80, 484,467,619.20 and 322,978,412.80 is: 484,467,619.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,978,412.80 : 484,467,619.20 = 322,978,412.80 : x
  2. Step 2: Convert to fraction form
    322,978,412.80/484,467,619.20 = 322,978,412.80/x
  3. Step 3: Cross multiply
    322,978,412.80x = 484,467,619.20 × 322,978,412.80
  4. Step 4: Simplify right side
    322,978,412.80x = 156,472,582,702,210,816
  5. Step 5: Solve for x
    x = 156,472,582,702,210,816/322,978,412.80
  6. Step 6: Final answer
    x = 484,467,619.20

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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.