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Finding the Fourth Proportional to 70,349.92, 105,536.86 and 25,976.90

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Solution

The fourth proportional to 70,349.92, 105,536.86 and 25,976.90 is: 38,969.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,349.92 : 105,536.86 = 25,976.90 : x
  2. Step 2: Convert to fraction form
    70,349.92/105,536.86 = 25,976.90/x
  3. Step 3: Cross multiply
    70,349.92x = 105,536.86 × 25,976.90
  4. Step 4: Simplify right side
    70,349.92x = 2,741,520,657.43
  5. Step 5: Solve for x
    x = 2,741,520,657.43/70,349.92
  6. Step 6: Final answer
    x = 38,969.78

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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.