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Finding the Fourth Proportional to 127,998.20, 191,738.10 and 88,599.80

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Solution

The fourth proportional to 127,998.20, 191,738.10 and 88,599.80 is: 132,720.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,998.20 : 191,738.10 = 88,599.80 : x
  2. Step 2: Convert to fraction form
    127,998.20/191,738.10 = 88,599.80/x
  3. Step 3: Cross multiply
    127,998.20x = 191,738.10 × 88,599.80
  4. Step 4: Simplify right side
    127,998.20x = 16,987,957,312.38
  5. Step 5: Solve for x
    x = 16,987,957,312.38/127,998.20
  6. Step 6: Final answer
    x = 132,720.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.