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Finding the Fourth Proportional to 892,408.16, 1,231,167.12 and 570,034.64

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Solution

The fourth proportional to 892,408.16, 1,231,167.12 and 570,034.64 is: 786,420.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,408.16 : 1,231,167.12 = 570,034.64 : x
  2. Step 2: Convert to fraction form
    892,408.16/1,231,167.12 = 570,034.64/x
  3. Step 3: Cross multiply
    892,408.16x = 1,231,167.12 × 570,034.64
  4. Step 4: Simplify right side
    892,408.16x = 701,807,906,029.04
  5. Step 5: Solve for x
    x = 701,807,906,029.04/892,408.16
  6. Step 6: Final answer
    x = 786,420.31

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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.