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Finding the Fourth Proportional to 682,243,918.67, 941,496,600.48 and 368,978,132.65

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Solution

The fourth proportional to 682,243,918.67, 941,496,600.48 and 368,978,132.65 is: 509,189,819.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,243,918.67 : 941,496,600.48 = 368,978,132.65 : x
  2. Step 2: Convert to fraction form
    682,243,918.67/941,496,600.48 = 368,978,132.65/x
  3. Step 3: Cross multiply
    682,243,918.67x = 941,496,600.48 × 368,978,132.65
  4. Step 4: Simplify right side
    682,243,918.67x = 347,391,657,539,762,368
  5. Step 5: Solve for x
    x = 347,391,657,539,762,368/682,243,918.67
  6. Step 6: Final answer
    x = 509,189,819.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.