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Finding the Fourth Proportional to 181,978,380.40, 272,967,570.60 and 113,103,626.80

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Solution

The fourth proportional to 181,978,380.40, 272,967,570.60 and 113,103,626.80 is: 169,655,440.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,978,380.40 : 272,967,570.60 = 113,103,626.80 : x
  2. Step 2: Convert to fraction form
    181,978,380.40/272,967,570.60 = 113,103,626.80/x
  3. Step 3: Cross multiply
    181,978,380.40x = 272,967,570.60 × 113,103,626.80
  4. Step 4: Simplify right side
    181,978,380.40x = 30,873,622,233,645,052
  5. Step 5: Solve for x
    x = 30,873,622,233,645,052/181,978,380.40
  6. Step 6: Final answer
    x = 169,655,440.20

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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.