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Finding the Fourth Proportional to 351,057.80, 526,266.81 and 126,365.42

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Solution

The fourth proportional to 351,057.80, 526,266.81 and 126,365.42 is: 189,432.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,057.80 : 526,266.81 = 126,365.42 : x
  2. Step 2: Convert to fraction form
    351,057.80/526,266.81 = 126,365.42/x
  3. Step 3: Cross multiply
    351,057.80x = 526,266.81 × 126,365.42
  4. Step 4: Simplify right side
    351,057.80x = 66,501,923,846.38
  5. Step 5: Solve for x
    x = 66,501,923,846.38/351,057.80
  6. Step 6: Final answer
    x = 189,432.98

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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.