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Finding the Fourth Proportional to 104,343.46, 143,885.06 and 61,893.79

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Solution

The fourth proportional to 104,343.46, 143,885.06 and 61,893.79 is: 85,348.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,343.46 : 143,885.06 = 61,893.79 : x
  2. Step 2: Convert to fraction form
    104,343.46/143,885.06 = 61,893.79/x
  3. Step 3: Cross multiply
    104,343.46x = 143,885.06 × 61,893.79
  4. Step 4: Simplify right side
    104,343.46x = 8,905,591,250.70
  5. Step 5: Solve for x
    x = 8,905,591,250.70/104,343.46
  6. Step 6: Final answer
    x = 85,348.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.