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Finding the Fourth Proportional to 67,318.80, 100,978.20 and 22,995.60

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Solution

The fourth proportional to 67,318.80, 100,978.20 and 22,995.60 is: 34,493.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,318.80 : 100,978.20 = 22,995.60 : x
  2. Step 2: Convert to fraction form
    67,318.80/100,978.20 = 22,995.60/x
  3. Step 3: Cross multiply
    67,318.80x = 100,978.20 × 22,995.60
  4. Step 4: Simplify right side
    67,318.80x = 2,322,054,295.92
  5. Step 5: Solve for x
    x = 2,322,054,295.92/67,318.80
  6. Step 6: Final answer
    x = 34,493.40

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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.