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Finding the Fourth Proportional to 65,764,881.20, 98,647,321.80 and 65,764,881.20

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Solution

The fourth proportional to 65,764,881.20, 98,647,321.80 and 65,764,881.20 is: 98,647,321.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,764,881.20 : 98,647,321.80 = 65,764,881.20 : x
  2. Step 2: Convert to fraction form
    65,764,881.20/98,647,321.80 = 65,764,881.20/x
  3. Step 3: Cross multiply
    65,764,881.20x = 98,647,321.80 × 65,764,881.20
  4. Step 4: Simplify right side
    65,764,881.20x = 6,487,529,398,875,170
  5. Step 5: Solve for x
    x = 6,487,529,398,875,170/65,764,881.20
  6. Step 6: Final answer
    x = 98,647,321.80

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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.