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Finding the Fourth Proportional to 105,198.72, 157,739.70 and 35,039.76

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Solution

The fourth proportional to 105,198.72, 157,739.70 and 35,039.76 is: 52,540.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,198.72 : 157,739.70 = 35,039.76 : x
  2. Step 2: Convert to fraction form
    105,198.72/157,739.70 = 35,039.76/x
  3. Step 3: Cross multiply
    105,198.72x = 157,739.70 × 35,039.76
  4. Step 4: Simplify right side
    105,198.72x = 5,527,161,230.47
  5. Step 5: Solve for x
    x = 5,527,161,230.47/105,198.72
  6. Step 6: Final answer
    x = 52,540.19

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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.