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Finding the Fourth Proportional to 18,455,356.80, 27,674,740.80 and 7,092,028.80

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Solution

The fourth proportional to 18,455,356.80, 27,674,740.80 and 7,092,028.80 is: 10,634,855.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455,356.80 : 27,674,740.80 = 7,092,028.80 : x
  2. Step 2: Convert to fraction form
    18,455,356.80/27,674,740.80 = 7,092,028.80/x
  3. Step 3: Cross multiply
    18,455,356.80x = 27,674,740.80 × 7,092,028.80
  4. Step 4: Simplify right side
    18,455,356.80x = 196,270,058,786,135.03
  5. Step 5: Solve for x
    x = 196,270,058,786,135.03/18,455,356.80
  6. Step 6: Final answer
    x = 10,634,855.83

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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.