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Finding the Fourth Proportional to 81,333,796.80, 122,000,695.20 and 27,480,331.20

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Solution

The fourth proportional to 81,333,796.80, 122,000,695.20 and 27,480,331.20 is: 41,220,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,333,796.80 : 122,000,695.20 = 27,480,331.20 : x
  2. Step 2: Convert to fraction form
    81,333,796.80/122,000,695.20 = 27,480,331.20/x
  3. Step 3: Cross multiply
    81,333,796.80x = 122,000,695.20 × 27,480,331.20
  4. Step 4: Simplify right side
    81,333,796.80x = 3,352,619,510,726,250
  5. Step 5: Solve for x
    x = 3,352,619,510,726,250/81,333,796.80
  6. Step 6: Final answer
    x = 41,220,496.80

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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.