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Finding the Fourth Proportional to 187,638.70, 281,102.84 and 92,758.54

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Solution

The fourth proportional to 187,638.70, 281,102.84 and 92,758.54 is: 138,962.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,638.70 : 281,102.84 = 92,758.54 : x
  2. Step 2: Convert to fraction form
    187,638.70/281,102.84 = 92,758.54/x
  3. Step 3: Cross multiply
    187,638.70x = 281,102.84 × 92,758.54
  4. Step 4: Simplify right side
    187,638.70x = 26,074,689,028.25
  5. Step 5: Solve for x
    x = 26,074,689,028.25/187,638.70
  6. Step 6: Final answer
    x = 138,962.21

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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.