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Finding the Fourth Proportional to 336,438.24, 504,754.74 and 99,786.57

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Solution

The fourth proportional to 336,438.24, 504,754.74 and 99,786.57 is: 149,708.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,438.24 : 504,754.74 = 99,786.57 : x
  2. Step 2: Convert to fraction form
    336,438.24/504,754.74 = 99,786.57/x
  3. Step 3: Cross multiply
    336,438.24x = 504,754.74 × 99,786.57
  4. Step 4: Simplify right side
    336,438.24x = 50,367,744,195.84
  5. Step 5: Solve for x
    x = 50,367,744,195.84/336,438.24
  6. Step 6: Final answer
    x = 149,708.74

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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.