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Finding the Fourth Proportional to 141,759.99, 195,657.12 and 81,371.45

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Solution

The fourth proportional to 141,759.99, 195,657.12 and 81,371.45 is: 112,308.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,759.99 : 195,657.12 = 81,371.45 : x
  2. Step 2: Convert to fraction form
    141,759.99/195,657.12 = 81,371.45/x
  3. Step 3: Cross multiply
    141,759.99x = 195,657.12 × 81,371.45
  4. Step 4: Simplify right side
    141,759.99x = 15,920,904,046.37
  5. Step 5: Solve for x
    x = 15,920,904,046.37/141,759.99
  6. Step 6: Final answer
    x = 112,308.87

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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.