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Finding the Fourth Proportional to 141,838.40, 212,563.20 and 100,236.80

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Solution

The fourth proportional to 141,838.40, 212,563.20 and 100,236.80 is: 150,217.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,838.40 : 212,563.20 = 100,236.80 : x
  2. Step 2: Convert to fraction form
    141,838.40/212,563.20 = 100,236.80/x
  3. Step 3: Cross multiply
    141,838.40x = 212,563.20 × 100,236.80
  4. Step 4: Simplify right side
    141,838.40x = 21,306,654,965.76
  5. Step 5: Solve for x
    x = 21,306,654,965.76/141,838.40
  6. Step 6: Final answer
    x = 150,217.82

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.