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Finding the Fourth Proportional to 196,611.71, 294,868.96 and 84,279.20

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Solution

The fourth proportional to 196,611.71, 294,868.96 and 84,279.20 is: 126,397.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,611.71 : 294,868.96 = 84,279.20 : x
  2. Step 2: Convert to fraction form
    196,611.71/294,868.96 = 84,279.20/x
  3. Step 3: Cross multiply
    196,611.71x = 294,868.96 × 84,279.20
  4. Step 4: Simplify right side
    196,611.71x = 24,851,320,053.63
  5. Step 5: Solve for x
    x = 24,851,320,053.63/196,611.71
  6. Step 6: Final answer
    x = 126,397.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.