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Finding the Fourth Proportional to 215,456.50, 323,219.76 and 63,668.98

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Solution

The fourth proportional to 215,456.50, 323,219.76 and 63,668.98 is: 95,513.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,456.50 : 323,219.76 = 63,668.98 : x
  2. Step 2: Convert to fraction form
    215,456.50/323,219.76 = 63,668.98/x
  3. Step 3: Cross multiply
    215,456.50x = 323,219.76 × 63,668.98
  4. Step 4: Simplify right side
    215,456.50x = 20,579,072,435.04
  5. Step 5: Solve for x
    x = 20,579,072,435.04/215,456.50
  6. Step 6: Final answer
    x = 95,513.82

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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.