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Finding the Fourth Proportional to 253,339.65, 349,606.11 and 140,163.21

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Solution

The fourth proportional to 253,339.65, 349,606.11 and 140,163.21 is: 193,423.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,339.65 : 349,606.11 = 140,163.21 : x
  2. Step 2: Convert to fraction form
    253,339.65/349,606.11 = 140,163.21/x
  3. Step 3: Cross multiply
    253,339.65x = 349,606.11 × 140,163.21
  4. Step 4: Simplify right side
    253,339.65x = 49,001,914,613.21
  5. Step 5: Solve for x
    x = 49,001,914,613.21/253,339.65
  6. Step 6: Final answer
    x = 193,423.79

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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.