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Finding the Fourth Proportional to 18,844,395.68, 25,998,643.40 and 12,321,843.16

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Solution

The fourth proportional to 18,844,395.68, 25,998,643.40 and 12,321,843.16 is: 16,999,813.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,844,395.68 : 25,998,643.40 = 12,321,843.16 : x
  2. Step 2: Convert to fraction form
    18,844,395.68/25,998,643.40 = 12,321,843.16/x
  3. Step 3: Cross multiply
    18,844,395.68x = 25,998,643.40 × 12,321,843.16
  4. Step 4: Simplify right side
    18,844,395.68x = 320,351,206,347,569.12
  5. Step 5: Solve for x
    x = 320,351,206,347,569.12/18,844,395.68
  6. Step 6: Final answer
    x = 16,999,813.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.