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Finding the Fourth Proportional to 231,042.70, 346,564.05 and 203,923.90

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Solution

The fourth proportional to 231,042.70, 346,564.05 and 203,923.90 is: 305,885.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,042.70 : 346,564.05 = 203,923.90 : x
  2. Step 2: Convert to fraction form
    231,042.70/346,564.05 = 203,923.90/x
  3. Step 3: Cross multiply
    231,042.70x = 346,564.05 × 203,923.90
  4. Step 4: Simplify right side
    231,042.70x = 70,672,692,675.80
  5. Step 5: Solve for x
    x = 70,672,692,675.80/231,042.70
  6. Step 6: Final answer
    x = 305,885.85

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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.