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Finding the Fourth Proportional to 325,709.80, 488,564.70 and 269,722.60

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Solution

The fourth proportional to 325,709.80, 488,564.70 and 269,722.60 is: 404,583.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,709.80 : 488,564.70 = 269,722.60 : x
  2. Step 2: Convert to fraction form
    325,709.80/488,564.70 = 269,722.60/x
  3. Step 3: Cross multiply
    325,709.80x = 488,564.70 × 269,722.60
  4. Step 4: Simplify right side
    325,709.80x = 131,776,941,152.22
  5. Step 5: Solve for x
    x = 131,776,941,152.22/325,709.80
  6. Step 6: Final answer
    x = 404,583.90

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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.