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Finding the Fourth Proportional to 18,621,969.80, 27,932,954.70 and 18,621,969.80

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Solution

The fourth proportional to 18,621,969.80, 27,932,954.70 and 18,621,969.80 is: 27,932,954.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621,969.80 : 27,932,954.70 = 18,621,969.80 : x
  2. Step 2: Convert to fraction form
    18,621,969.80/27,932,954.70 = 18,621,969.80/x
  3. Step 3: Cross multiply
    18,621,969.80x = 27,932,954.70 × 18,621,969.80
  4. Step 4: Simplify right side
    18,621,969.80x = 520,166,638,848,168.06
  5. Step 5: Solve for x
    x = 520,166,638,848,168.06/18,621,969.80
  6. Step 6: Final answer
    x = 27,932,954.70

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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.