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Finding the Fourth Proportional to 73,457,712.20, 110,186,568.30 and 68,978,736.20

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Solution

The fourth proportional to 73,457,712.20, 110,186,568.30 and 68,978,736.20 is: 103,468,104.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,457,712.20 : 110,186,568.30 = 68,978,736.20 : x
  2. Step 2: Convert to fraction form
    73,457,712.20/110,186,568.30 = 68,978,736.20/x
  3. Step 3: Cross multiply
    73,457,712.20x = 110,186,568.30 × 68,978,736.20
  4. Step 4: Simplify right side
    73,457,712.20x = 7,600,530,227,548,983
  5. Step 5: Solve for x
    x = 7,600,530,227,548,983/73,457,712.20
  6. Step 6: Final answer
    x = 103,468,104.30

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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.