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Finding the Fourth Proportional to 73,182.43, 100,991.88 and 39,648.43

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Solution

The fourth proportional to 73,182.43, 100,991.88 and 39,648.43 is: 54,714.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,182.43 : 100,991.88 = 39,648.43 : x
  2. Step 2: Convert to fraction form
    73,182.43/100,991.88 = 39,648.43/x
  3. Step 3: Cross multiply
    73,182.43x = 100,991.88 × 39,648.43
  4. Step 4: Simplify right side
    73,182.43x = 4,004,169,484.75
  5. Step 5: Solve for x
    x = 4,004,169,484.75/73,182.43
  6. Step 6: Final answer
    x = 54,714.90

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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.