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Finding the Fourth Proportional to 307,675.76, 424,613.87 and 171,736.22

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Solution

The fourth proportional to 307,675.76, 424,613.87 and 171,736.22 is: 237,007.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,675.76 : 424,613.87 = 171,736.22 : x
  2. Step 2: Convert to fraction form
    307,675.76/424,613.87 = 171,736.22/x
  3. Step 3: Cross multiply
    307,675.76x = 424,613.87 × 171,736.22
  4. Step 4: Simplify right side
    307,675.76x = 72,921,578,011.62
  5. Step 5: Solve for x
    x = 72,921,578,011.62/307,675.76
  6. Step 6: Final answer
    x = 237,007.88

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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.