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Finding the Fourth Proportional to 127,949.90, 191,958.88 and 43,709.94

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Solution

The fourth proportional to 127,949.90, 191,958.88 and 43,709.94 is: 65,576.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,949.90 : 191,958.88 = 43,709.94 : x
  2. Step 2: Convert to fraction form
    127,949.90/191,958.88 = 43,709.94/x
  3. Step 3: Cross multiply
    127,949.90x = 191,958.88 × 43,709.94
  4. Step 4: Simplify right side
    127,949.90x = 8,390,510,167.47
  5. Step 5: Solve for x
    x = 8,390,510,167.47/127,949.90
  6. Step 6: Final answer
    x = 65,576.53

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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.