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Finding the Fourth Proportional to 54,459,138.60, 76,434,112.80 and 54,459,138.60

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Solution

The fourth proportional to 54,459,138.60, 76,434,112.80 and 54,459,138.60 is: 76,434,112.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,459,138.60 : 76,434,112.80 = 54,459,138.60 : x
  2. Step 2: Convert to fraction form
    54,459,138.60/76,434,112.80 = 54,459,138.60/x
  3. Step 3: Cross multiply
    54,459,138.60x = 76,434,112.80 × 54,459,138.60
  4. Step 4: Simplify right side
    54,459,138.60x = 4,162,535,942,743,234
  5. Step 5: Solve for x
    x = 4,162,535,942,743,234/54,459,138.60
  6. Step 6: Final answer
    x = 76,434,112.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.