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Finding the Fourth Proportional to 253,609.97, 349,992.84 and 140,432.72

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Solution

The fourth proportional to 253,609.97, 349,992.84 and 140,432.72 is: 193,803.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,609.97 : 349,992.84 = 140,432.72 : x
  2. Step 2: Convert to fraction form
    253,609.97/349,992.84 = 140,432.72/x
  3. Step 3: Cross multiply
    253,609.97x = 349,992.84 × 140,432.72
  4. Step 4: Simplify right side
    253,609.97x = 49,150,444,751.76
  5. Step 5: Solve for x
    x = 49,150,444,751.76/253,609.97
  6. Step 6: Final answer
    x = 193,803.29

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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.