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Finding the Fourth Proportional to 144,694.48, 199,679.76 and 80,165.08

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Solution

The fourth proportional to 144,694.48, 199,679.76 and 80,165.08 is: 110,628.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,694.48 : 199,679.76 = 80,165.08 : x
  2. Step 2: Convert to fraction form
    144,694.48/199,679.76 = 80,165.08/x
  3. Step 3: Cross multiply
    144,694.48x = 199,679.76 × 80,165.08
  4. Step 4: Simplify right side
    144,694.48x = 16,007,343,934.78
  5. Step 5: Solve for x
    x = 16,007,343,934.78/144,694.48
  6. Step 6: Final answer
    x = 110,628.57

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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.