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Finding the Fourth Proportional to 141,662.09, 195,493.24 and 77,999.90

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Solution

The fourth proportional to 141,662.09, 195,493.24 and 77,999.90 is: 107,639.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,662.09 : 195,493.24 = 77,999.90 : x
  2. Step 2: Convert to fraction form
    141,662.09/195,493.24 = 77,999.90/x
  3. Step 3: Cross multiply
    141,662.09x = 195,493.24 × 77,999.90
  4. Step 4: Simplify right side
    141,662.09x = 15,248,453,170.68
  5. Step 5: Solve for x
    x = 15,248,453,170.68/141,662.09
  6. Step 6: Final answer
    x = 107,639.62

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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.