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Finding the Fourth Proportional to 393,321.64, 589,982.78 and 168,536.28

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Solution

The fourth proportional to 393,321.64, 589,982.78 and 168,536.28 is: 252,804.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,321.64 : 589,982.78 = 168,536.28 : x
  2. Step 2: Convert to fraction form
    393,321.64/589,982.78 = 168,536.28/x
  3. Step 3: Cross multiply
    393,321.64x = 589,982.78 × 168,536.28
  4. Step 4: Simplify right side
    393,321.64x = 99,433,503,005.26
  5. Step 5: Solve for x
    x = 99,433,503,005.26/393,321.64
  6. Step 6: Final answer
    x = 252,804.56

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1.5x scale

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.