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Finding the Fourth Proportional to 61,892.11, 85,412.47 and 37,694.21

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Solution

The fourth proportional to 61,892.11, 85,412.47 and 37,694.21 is: 52,018.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,892.11 : 85,412.47 = 37,694.21 : x
  2. Step 2: Convert to fraction form
    61,892.11/85,412.47 = 37,694.21/x
  3. Step 3: Cross multiply
    61,892.11x = 85,412.47 × 37,694.21
  4. Step 4: Simplify right side
    61,892.11x = 3,219,555,580.80
  5. Step 5: Solve for x
    x = 3,219,555,580.80/61,892.11
  6. Step 6: Final answer
    x = 52,018.84

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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.