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Finding the Fourth Proportional to 397,355.41, 548,353.31 and 216,066.04

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Solution

The fourth proportional to 397,355.41, 548,353.31 and 216,066.04 is: 298,172.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,355.41 : 548,353.31 = 216,066.04 : x
  2. Step 2: Convert to fraction form
    397,355.41/548,353.31 = 216,066.04/x
  3. Step 3: Cross multiply
    397,355.41x = 548,353.31 × 216,066.04
  4. Step 4: Simplify right side
    397,355.41x = 118,480,526,205.63
  5. Step 5: Solve for x
    x = 118,480,526,205.63/397,355.41
  6. Step 6: Final answer
    x = 298,172.68

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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.