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Finding the Fourth Proportional to 70,891.20, 106,205.60 and 41,323.20

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Solution

The fourth proportional to 70,891.20, 106,205.60 and 41,323.20 is: 61,908.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,891.20 : 106,205.60 = 41,323.20 : x
  2. Step 2: Convert to fraction form
    70,891.20/106,205.60 = 41,323.20/x
  3. Step 3: Cross multiply
    70,891.20x = 106,205.60 × 41,323.20
  4. Step 4: Simplify right side
    70,891.20x = 4,388,755,249.92
  5. Step 5: Solve for x
    x = 4,388,755,249.92/70,891.20
  6. Step 6: Final answer
    x = 61,908.32

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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.