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Finding the Fourth Proportional to 325,765.40, 488,631.90 and 168,009.80

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Solution

The fourth proportional to 325,765.40, 488,631.90 and 168,009.80 is: 252,006.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,765.40 : 488,631.90 = 168,009.80 : x
  2. Step 2: Convert to fraction form
    325,765.40/488,631.90 = 168,009.80/x
  3. Step 3: Cross multiply
    325,765.40x = 488,631.90 × 168,009.80
  4. Step 4: Simplify right side
    325,765.40x = 82,094,947,792.62
  5. Step 5: Solve for x
    x = 82,094,947,792.62/325,765.40
  6. Step 6: Final answer
    x = 252,006.35

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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.