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Finding the Fourth Proportional to 351,508.43, 526,946.90 and 126,816.05

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Solution

The fourth proportional to 351,508.43, 526,946.90 and 126,816.05 is: 190,110.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,508.43 : 526,946.90 = 126,816.05 : x
  2. Step 2: Convert to fraction form
    351,508.43/526,946.90 = 126,816.05/x
  3. Step 3: Cross multiply
    351,508.43x = 526,946.90 × 126,816.05
  4. Step 4: Simplify right side
    351,508.43x = 66,825,321,148.93
  5. Step 5: Solve for x
    x = 66,825,321,148.93/351,508.43
  6. Step 6: Final answer
    x = 190,110.15

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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.