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Finding the Fourth Proportional to 483,446.75, 724,921.12 and 216,978.83

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Solution

The fourth proportional to 483,446.75, 724,921.12 and 216,978.83 is: 325,356.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,446.75 : 724,921.12 = 216,978.83 : x
  2. Step 2: Convert to fraction form
    483,446.75/724,921.12 = 216,978.83/x
  3. Step 3: Cross multiply
    483,446.75x = 724,921.12 × 216,978.83
  4. Step 4: Simplify right side
    483,446.75x = 157,292,531,750.39
  5. Step 5: Solve for x
    x = 157,292,531,750.39/483,446.75
  6. Step 6: Final answer
    x = 325,356.48

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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.