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Finding the Fourth Proportional to 253,578.63, 349,949.44 and 140,401.38

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Solution

The fourth proportional to 253,578.63, 349,949.44 and 140,401.38 is: 193,759.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,578.63 : 349,949.44 = 140,401.38 : x
  2. Step 2: Convert to fraction form
    253,578.63/349,949.44 = 140,401.38/x
  3. Step 3: Cross multiply
    253,578.63x = 349,949.44 × 140,401.38
  4. Step 4: Simplify right side
    253,578.63x = 49,133,384,306.23
  5. Step 5: Solve for x
    x = 49,133,384,306.23/253,578.63
  6. Step 6: Final answer
    x = 193,759.96

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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.