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Finding the Fourth Proportional to 141,858.29, 195,764.39 and 78,197.15

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Solution

The fourth proportional to 141,858.29, 195,764.39 and 78,197.15 is: 107,912.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,858.29 : 195,764.39 = 78,197.15 : x
  2. Step 2: Convert to fraction form
    141,858.29/195,764.39 = 78,197.15/x
  3. Step 3: Cross multiply
    141,858.29x = 195,764.39 × 78,197.15
  4. Step 4: Simplify right side
    141,858.29x = 15,308,217,369.49
  5. Step 5: Solve for x
    x = 15,308,217,369.49/141,858.29
  6. Step 6: Final answer
    x = 107,912.04

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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.