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Finding the Fourth Proportional to 19,964,287.80, 27,551,993.40 and 11,259,284.40

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Solution

The fourth proportional to 19,964,287.80, 27,551,993.40 and 11,259,284.40 is: 15,538,532.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,964,287.80 : 27,551,993.40 = 11,259,284.40 : x
  2. Step 2: Convert to fraction form
    19,964,287.80/27,551,993.40 = 11,259,284.40/x
  3. Step 3: Cross multiply
    19,964,287.80x = 27,551,993.40 × 11,259,284.40
  4. Step 4: Simplify right side
    19,964,287.80x = 310,215,729,477,522.94
  5. Step 5: Solve for x
    x = 310,215,729,477,522.94/19,964,287.80
  6. Step 6: Final answer
    x = 15,538,532.23

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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.