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Finding the Fourth Proportional to 65,992.48, 91,048.20 and 37,309.36

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Solution

The fourth proportional to 65,992.48, 91,048.20 and 37,309.36 is: 51,474.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,992.48 : 91,048.20 = 37,309.36 : x
  2. Step 2: Convert to fraction form
    65,992.48/91,048.20 = 37,309.36/x
  3. Step 3: Cross multiply
    65,992.48x = 91,048.20 × 37,309.36
  4. Step 4: Simplify right side
    65,992.48x = 3,396,950,071.15
  5. Step 5: Solve for x
    x = 3,396,950,071.15/65,992.48
  6. Step 6: Final answer
    x = 51,474.81

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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.