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Finding the Fourth Proportional to 131,377.20, 196,774.20 and 113,881.20

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Solution

The fourth proportional to 131,377.20, 196,774.20 and 113,881.20 is: 170,569.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,377.20 : 196,774.20 = 113,881.20 : x
  2. Step 2: Convert to fraction form
    131,377.20/196,774.20 = 113,881.20/x
  3. Step 3: Cross multiply
    131,377.20x = 196,774.20 × 113,881.20
  4. Step 4: Simplify right side
    131,377.20x = 22,408,882,025.04
  5. Step 5: Solve for x
    x = 22,408,882,025.04/131,377.20
  6. Step 6: Final answer
    x = 170,569.03

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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.