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Finding the Fourth Proportional to 363,090.43, 544,638.09 and 126,432.34

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Solution

The fourth proportional to 363,090.43, 544,638.09 and 126,432.34 is: 189,649.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,090.43 : 544,638.09 = 126,432.34 : x
  2. Step 2: Convert to fraction form
    363,090.43/544,638.09 = 126,432.34/x
  3. Step 3: Cross multiply
    363,090.43x = 544,638.09 × 126,432.34
  4. Step 4: Simplify right side
    363,090.43x = 68,859,868,171.83
  5. Step 5: Solve for x
    x = 68,859,868,171.83/363,090.43
  6. Step 6: Final answer
    x = 189,649.36

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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.