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Finding the Fourth Proportional to 221,553.39, 304,974 and 193,209.87

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Solution

The fourth proportional to 221,553.39, 304,974 and 193,209.87 is: 265,958.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,553.39 : 304,974 = 193,209.87 : x
  2. Step 2: Convert to fraction form
    221,553.39/304,974 = 193,209.87/x
  3. Step 3: Cross multiply
    221,553.39x = 304,974 × 193,209.87
  4. Step 4: Simplify right side
    221,553.39x = 58,923,986,893.38
  5. Step 5: Solve for x
    x = 58,923,986,893.38/221,553.39
  6. Step 6: Final answer
    x = 265,958.41

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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.