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Finding the Fourth Proportional to 226,633.75, 312,748.05 and 124,659.21

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Solution

The fourth proportional to 226,633.75, 312,748.05 and 124,659.21 is: 172,026.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,633.75 : 312,748.05 = 124,659.21 : x
  2. Step 2: Convert to fraction form
    226,633.75/312,748.05 = 124,659.21/x
  3. Step 3: Cross multiply
    226,633.75x = 312,748.05 × 124,659.21
  4. Step 4: Simplify right side
    226,633.75x = 38,986,923,201.76
  5. Step 5: Solve for x
    x = 38,986,923,201.76/226,633.75
  6. Step 6: Final answer
    x = 172,026.11

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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.