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Finding the Fourth Proportional to 144,673.56, 199,649.82 and 81,011.16

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Solution

The fourth proportional to 144,673.56, 199,649.82 and 81,011.16 is: 111,795.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,673.56 : 199,649.82 = 81,011.16 : x
  2. Step 2: Convert to fraction form
    144,673.56/199,649.82 = 81,011.16/x
  3. Step 3: Cross multiply
    144,673.56x = 199,649.82 × 81,011.16
  4. Step 4: Simplify right side
    144,673.56x = 16,173,863,511.99
  5. Step 5: Solve for x
    x = 16,173,863,511.99/144,673.56
  6. Step 6: Final answer
    x = 111,795.57

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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.