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Finding the Fourth Proportional to 5,323,471.44, 7,986,553.11 and 1,485,291.78

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Solution

The fourth proportional to 5,323,471.44, 7,986,553.11 and 1,485,291.78 is: 2,228,313.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,323,471.44 : 7,986,553.11 = 1,485,291.78 : x
  2. Step 2: Convert to fraction form
    5,323,471.44/7,986,553.11 = 1,485,291.78/x
  3. Step 3: Cross multiply
    5,323,471.44x = 7,986,553.11 × 1,485,291.78
  4. Step 4: Simplify right side
    5,323,471.44x = 11,862,361,684,816.44
  5. Step 5: Solve for x
    x = 11,862,361,684,816.44/5,323,471.44
  6. Step 6: Final answer
    x = 2,228,313.20

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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.