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Finding the Fourth Proportional to 637,699,943.40, 956,773,863.90 and 274,305,690.60

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Solution

The fourth proportional to 637,699,943.40, 956,773,863.90 and 274,305,690.60 is: 411,554,867.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,699,943.40 : 956,773,863.90 = 274,305,690.60 : x
  2. Step 2: Convert to fraction form
    637,699,943.40/956,773,863.90 = 274,305,690.60/x
  3. Step 3: Cross multiply
    637,699,943.40x = 956,773,863.90 × 274,305,690.60
  4. Step 4: Simplify right side
    637,699,943.40x = 262,448,515,485,119,936
  5. Step 5: Solve for x
    x = 262,448,515,485,119,936/637,699,943.40
  6. Step 6: Final answer
    x = 411,554,867.15

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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.