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Finding the Fourth Proportional to 18,254,865.21, 25,190,756.78 and 9,993,344.73

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Solution

The fourth proportional to 18,254,865.21, 25,190,756.78 and 9,993,344.73 is: 13,790,291.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,254,865.21 : 25,190,756.78 = 9,993,344.73 : x
  2. Step 2: Convert to fraction form
    18,254,865.21/25,190,756.78 = 9,993,344.73/x
  3. Step 3: Cross multiply
    18,254,865.21x = 25,190,756.78 × 9,993,344.73
  4. Step 4: Simplify right side
    18,254,865.21x = 251,739,916,462,158.03
  5. Step 5: Solve for x
    x = 251,739,916,462,158.03/18,254,865.21
  6. Step 6: Final answer
    x = 13,790,291.71

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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.