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Finding the Fourth Proportional to 40,321,918.30, 60,398,896.65 and 40,321,918.30

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Solution

The fourth proportional to 40,321,918.30, 60,398,896.65 and 40,321,918.30 is: 60,398,896.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,321,918.30 : 60,398,896.65 = 40,321,918.30 : x
  2. Step 2: Convert to fraction form
    40,321,918.30/60,398,896.65 = 40,321,918.30/x
  3. Step 3: Cross multiply
    40,321,918.30x = 60,398,896.65 × 40,321,918.30
  4. Step 4: Simplify right side
    40,321,918.30x = 2,435,399,376,131,443.50
  5. Step 5: Solve for x
    x = 2,435,399,376,131,443.50/40,321,918.30
  6. Step 6: Final answer
    x = 60,398,896.65

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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.