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Finding the Fourth Proportional to 121,797.86, 182,733.68 and 55,220.11

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Solution

The fourth proportional to 121,797.86, 182,733.68 and 55,220.11 is: 82,846.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,797.86 : 182,733.68 = 55,220.11 : x
  2. Step 2: Convert to fraction form
    121,797.86/182,733.68 = 55,220.11/x
  3. Step 3: Cross multiply
    121,797.86x = 182,733.68 × 55,220.11
  4. Step 4: Simplify right side
    121,797.86x = 10,090,573,591.52
  5. Step 5: Solve for x
    x = 10,090,573,591.52/121,797.86
  6. Step 6: Final answer
    x = 82,846.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.