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Finding the Fourth Proportional to 356,145.81, 491,481.13 and 195,000.81

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Solution

The fourth proportional to 356,145.81, 491,481.13 and 195,000.81 is: 269,101.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,145.81 : 491,481.13 = 195,000.81 : x
  2. Step 2: Convert to fraction form
    356,145.81/491,481.13 = 195,000.81/x
  3. Step 3: Cross multiply
    356,145.81x = 491,481.13 × 195,000.81
  4. Step 4: Simplify right side
    356,145.81x = 95,839,218,449.72
  5. Step 5: Solve for x
    x = 95,839,218,449.72/356,145.81
  6. Step 6: Final answer
    x = 269,101.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.