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Finding the Fourth Proportional to 106,425.44, 159,312.15 and 68,910.88

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Solution

The fourth proportional to 106,425.44, 159,312.15 and 68,910.88 is: 103,155.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,425.44 : 159,312.15 = 68,910.88 : x
  2. Step 2: Convert to fraction form
    106,425.44/159,312.15 = 68,910.88/x
  3. Step 3: Cross multiply
    106,425.44x = 159,312.15 × 68,910.88
  4. Step 4: Simplify right side
    106,425.44x = 10,978,340,451.19
  5. Step 5: Solve for x
    x = 10,978,340,451.19/106,425.44
  6. Step 6: Final answer
    x = 103,155.23

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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.