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Finding the Fourth Proportional to 18,441,619.20, 27,662,428.80 and 17,181,907.20

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Solution

The fourth proportional to 18,441,619.20, 27,662,428.80 and 17,181,907.20 is: 25,772,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,441,619.20 : 27,662,428.80 = 17,181,907.20 : x
  2. Step 2: Convert to fraction form
    18,441,619.20/27,662,428.80 = 17,181,907.20/x
  3. Step 3: Cross multiply
    18,441,619.20x = 27,662,428.80 × 17,181,907.20
  4. Step 4: Simplify right side
    18,441,619.20x = 475,293,284,568,207.38
  5. Step 5: Solve for x
    x = 475,293,284,568,207.38/18,441,619.20
  6. Step 6: Final answer
    x = 25,772,860.80

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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.