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Finding the Fourth Proportional to 641,968,093.08, 885,900,978 and 377,667,104.04

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Solution

The fourth proportional to 641,968,093.08, 885,900,978 and 377,667,104.04 is: 521,171,784.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,968,093.08 : 885,900,978 = 377,667,104.04 : x
  2. Step 2: Convert to fraction form
    641,968,093.08/885,900,978 = 377,667,104.04/x
  3. Step 3: Cross multiply
    641,968,093.08x = 885,900,978 × 377,667,104.04
  4. Step 4: Simplify right side
    641,968,093.08x = 334,575,656,827,463,744
  5. Step 5: Solve for x
    x = 334,575,656,827,463,744/641,968,093.08
  6. Step 6: Final answer
    x = 521,171,784.76

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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.