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Finding the Fourth Proportional to 144,703.44, 199,690.74 and 81,041.28

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Solution

The fourth proportional to 144,703.44, 199,690.74 and 81,041.28 is: 111,836.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,703.44 : 199,690.74 = 81,041.28 : x
  2. Step 2: Convert to fraction form
    144,703.44/199,690.74 = 81,041.28/x
  3. Step 3: Cross multiply
    144,703.44x = 199,690.74 × 81,041.28
  4. Step 4: Simplify right side
    144,703.44x = 16,183,193,173.75
  5. Step 5: Solve for x
    x = 16,183,193,173.75/144,703.44
  6. Step 6: Final answer
    x = 111,836.96

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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.