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Finding the Fourth Proportional to 65,387.36, 90,231.90 and 37,092.44

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Solution

The fourth proportional to 65,387.36, 90,231.90 and 37,092.44 is: 51,186.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,387.36 : 90,231.90 = 37,092.44 : x
  2. Step 2: Convert to fraction form
    65,387.36/90,231.90 = 37,092.44/x
  3. Step 3: Cross multiply
    65,387.36x = 90,231.90 × 37,092.44
  4. Step 4: Simplify right side
    65,387.36x = 3,346,921,336.84
  5. Step 5: Solve for x
    x = 3,346,921,336.84/65,387.36
  6. Step 6: Final answer
    x = 51,186.06

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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.