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Finding the Fourth Proportional to 253,571.36, 349,939.40 and 140,394.11

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Solution

The fourth proportional to 253,571.36, 349,939.40 and 140,394.11 is: 193,749.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,571.36 : 349,939.40 = 140,394.11 : x
  2. Step 2: Convert to fraction form
    253,571.36/349,939.40 = 140,394.11/x
  3. Step 3: Cross multiply
    253,571.36x = 349,939.40 × 140,394.11
  4. Step 4: Simplify right side
    253,571.36x = 49,129,428,165.27
  5. Step 5: Solve for x
    x = 49,129,428,165.27/253,571.36
  6. Step 6: Final answer
    x = 193,749.91

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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.