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Finding the Fourth Proportional to 225,913.02, 338,859.28 and 99,519.49

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Solution

The fourth proportional to 225,913.02, 338,859.28 and 99,519.49 is: 149,274.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,913.02 : 338,859.28 = 99,519.49 : x
  2. Step 2: Convert to fraction form
    225,913.02/338,859.28 = 99,519.49/x
  3. Step 3: Cross multiply
    225,913.02x = 338,859.28 × 99,519.49
  4. Step 4: Simplify right side
    225,913.02x = 33,723,102,727.37
  5. Step 5: Solve for x
    x = 33,723,102,727.37/225,913.02
  6. Step 6: Final answer
    x = 149,274.72

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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.