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Finding the Fourth Proportional to 141,930.76, 195,855.50 and 81,458.84

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Solution

The fourth proportional to 141,930.76, 195,855.50 and 81,458.84 is: 112,408.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,930.76 : 195,855.50 = 81,458.84 : x
  2. Step 2: Convert to fraction form
    141,930.76/195,855.50 = 81,458.84/x
  3. Step 3: Cross multiply
    141,930.76x = 195,855.50 × 81,458.84
  4. Step 4: Simplify right side
    141,930.76x = 15,954,161,837.62
  5. Step 5: Solve for x
    x = 15,954,161,837.62/141,930.76
  6. Step 6: Final answer
    x = 112,408.06

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1.5x scale

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.