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Finding the Fourth Proportional to 18,538,051.80, 27,807,077.70 and 18,538,051.80

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Solution

The fourth proportional to 18,538,051.80, 27,807,077.70 and 18,538,051.80 is: 27,807,077.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,538,051.80 : 27,807,077.70 = 18,538,051.80 : x
  2. Step 2: Convert to fraction form
    18,538,051.80/27,807,077.70 = 18,538,051.80/x
  3. Step 3: Cross multiply
    18,538,051.80x = 27,807,077.70 × 18,538,051.80
  4. Step 4: Simplify right side
    18,538,051.80x = 515,489,046,809,224.88
  5. Step 5: Solve for x
    x = 515,489,046,809,224.88/18,538,051.80
  6. Step 6: Final answer
    x = 27,807,077.70

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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.