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Finding the Fourth Proportional to 83,010.72, 124,489.92 and 36,216.48

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Solution

The fourth proportional to 83,010.72, 124,489.92 and 36,216.48 is: 54,313.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,010.72 : 124,489.92 = 36,216.48 : x
  2. Step 2: Convert to fraction form
    83,010.72/124,489.92 = 36,216.48/x
  3. Step 3: Cross multiply
    83,010.72x = 124,489.92 × 36,216.48
  4. Step 4: Simplify right side
    83,010.72x = 4,508,586,697.88
  5. Step 5: Solve for x
    x = 4,508,586,697.88/83,010.72
  6. Step 6: Final answer
    x = 54,313.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.