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Finding the Fourth Proportional to 446,636.40, 669,724.20 and 166,009.20

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Solution

The fourth proportional to 446,636.40, 669,724.20 and 166,009.20 is: 248,928.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,636.40 : 669,724.20 = 166,009.20 : x
  2. Step 2: Convert to fraction form
    446,636.40/669,724.20 = 166,009.20/x
  3. Step 3: Cross multiply
    446,636.40x = 669,724.20 × 166,009.20
  4. Step 4: Simplify right side
    446,636.40x = 111,180,378,662.64
  5. Step 5: Solve for x
    x = 111,180,378,662.64/446,636.40
  6. Step 6: Final answer
    x = 248,928.16

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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.