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Finding the Fourth Proportional to 141,939, 195,877.26 and 85,351.32

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Solution

The fourth proportional to 141,939, 195,877.26 and 85,351.32 is: 117,785.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,939 : 195,877.26 = 85,351.32 : x
  2. Step 2: Convert to fraction form
    141,939/195,877.26 = 85,351.32/x
  3. Step 3: Cross multiply
    141,939x = 195,877.26 × 85,351.32
  4. Step 4: Simplify right side
    141,939x = 16,718,382,698.98
  5. Step 5: Solve for x
    x = 16,718,382,698.98/141,939
  6. Step 6: Final answer
    x = 117,785.69

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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.