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Finding the Fourth Proportional to 397,790.67, 548,951.12 and 216,503.92

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Solution

The fourth proportional to 397,790.67, 548,951.12 and 216,503.92 is: 298,775.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,790.67 : 548,951.12 = 216,503.92 : x
  2. Step 2: Convert to fraction form
    397,790.67/548,951.12 = 216,503.92/x
  3. Step 3: Cross multiply
    397,790.67x = 548,951.12 × 216,503.92
  4. Step 4: Simplify right side
    397,790.67x = 118,850,068,106.92
  5. Step 5: Solve for x
    x = 118,850,068,106.92/397,790.67
  6. Step 6: Final answer
    x = 298,775.41

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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.