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Finding the Fourth Proportional to 351,103.84, 526,531.20 and 126,403.96

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Solution

The fourth proportional to 351,103.84, 526,531.20 and 126,403.96 is: 189,561.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,103.84 : 526,531.20 = 126,403.96 : x
  2. Step 2: Convert to fraction form
    351,103.84/526,531.20 = 126,403.96/x
  3. Step 3: Cross multiply
    351,103.84x = 526,531.20 × 126,403.96
  4. Step 4: Simplify right side
    351,103.84x = 66,555,628,743.55
  5. Step 5: Solve for x
    x = 66,555,628,743.55/351,103.84
  6. Step 6: Final answer
    x = 189,561.10

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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.