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Finding the Fourth Proportional to 235,995.99, 353,781.42 and 86,131.12

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Solution

The fourth proportional to 235,995.99, 353,781.42 and 86,131.12 is: 129,119.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,995.99 : 353,781.42 = 86,131.12 : x
  2. Step 2: Convert to fraction form
    235,995.99/353,781.42 = 86,131.12/x
  3. Step 3: Cross multiply
    235,995.99x = 353,781.42 × 86,131.12
  4. Step 4: Simplify right side
    235,995.99x = 30,471,589,939.79
  5. Step 5: Solve for x
    x = 30,471,589,939.79/235,995.99
  6. Step 6: Final answer
    x = 129,119.10

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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.