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Finding the Fourth Proportional to 79,645.48, 109,908.44 and 43,835.48

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Solution

The fourth proportional to 79,645.48, 109,908.44 and 43,835.48 is: 60,491.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,645.48 : 109,908.44 = 43,835.48 : x
  2. Step 2: Convert to fraction form
    79,645.48/109,908.44 = 43,835.48/x
  3. Step 3: Cross multiply
    79,645.48x = 109,908.44 × 43,835.48
  4. Step 4: Simplify right side
    79,645.48x = 4,817,889,223.45
  5. Step 5: Solve for x
    x = 4,817,889,223.45/79,645.48
  6. Step 6: Final answer
    x = 60,491.68

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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.