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Finding the Fourth Proportional to 575,316,350.40, 861,982,502.40 and 267,978,115.20

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Solution

The fourth proportional to 575,316,350.40, 861,982,502.40 and 267,978,115.20 is: 401,505,095.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,316,350.40 : 861,982,502.40 = 267,978,115.20 : x
  2. Step 2: Convert to fraction form
    575,316,350.40/861,982,502.40 = 267,978,115.20/x
  3. Step 3: Cross multiply
    575,316,350.40x = 861,982,502.40 × 267,978,115.20
  4. Step 4: Simplify right side
    575,316,350.40x = 230,992,446,328,531,456
  5. Step 5: Solve for x
    x = 230,992,446,328,531,456/575,316,350.40
  6. Step 6: Final answer
    x = 401,505,095.71

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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.