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Finding the Fourth Proportional to 483,699.92, 725,795.64 and 217,406.80

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Solution

The fourth proportional to 483,699.92, 725,795.64 and 217,406.80 is: 326,220.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,699.92 : 725,795.64 = 217,406.80 : x
  2. Step 2: Convert to fraction form
    483,699.92/725,795.64 = 217,406.80/x
  3. Step 3: Cross multiply
    483,699.92x = 725,795.64 × 217,406.80
  4. Step 4: Simplify right side
    483,699.92x = 157,792,907,546.35
  5. Step 5: Solve for x
    x = 157,792,907,546.35/483,699.92
  6. Step 6: Final answer
    x = 326,220.66

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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.