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Finding the Fourth Proportional to 73,438,968.60, 110,185,571.70 and 30,311,911.80

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Solution

The fourth proportional to 73,438,968.60, 110,185,571.70 and 30,311,911.80 is: 45,479,060.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,438,968.60 : 110,185,571.70 = 30,311,911.80 : x
  2. Step 2: Convert to fraction form
    73,438,968.60/110,185,571.70 = 30,311,911.80/x
  3. Step 3: Cross multiply
    73,438,968.60x = 110,185,571.70 × 30,311,911.80
  4. Step 4: Simplify right side
    73,438,968.60x = 3,339,935,331,002,976
  5. Step 5: Solve for x
    x = 3,339,935,331,002,976/73,438,968.60
  6. Step 6: Final answer
    x = 45,479,060.98

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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.