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Finding the Fourth Proportional to 57,893.06, 79,892.43 and 31,397.06

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Solution

The fourth proportional to 57,893.06, 79,892.43 and 31,397.06 is: 43,327.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,893.06 : 79,892.43 = 31,397.06 : x
  2. Step 2: Convert to fraction form
    57,893.06/79,892.43 = 31,397.06/x
  3. Step 3: Cross multiply
    57,893.06x = 79,892.43 × 31,397.06
  4. Step 4: Simplify right side
    57,893.06x = 2,508,387,500.25
  5. Step 5: Solve for x
    x = 2,508,387,500.25/57,893.06
  6. Step 6: Final answer
    x = 43,327.95

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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.