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Finding the Fourth Proportional to 393,742.80, 590,593.56 and 113,249.04

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Solution

The fourth proportional to 393,742.80, 590,593.56 and 113,249.04 is: 169,867.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,742.80 : 590,593.56 = 113,249.04 : x
  2. Step 2: Convert to fraction form
    393,742.80/590,593.56 = 113,249.04/x
  3. Step 3: Cross multiply
    393,742.80x = 590,593.56 × 113,249.04
  4. Step 4: Simplify right side
    393,742.80x = 66,884,153,700.18
  5. Step 5: Solve for x
    x = 66,884,153,700.18/393,742.80
  6. Step 6: Final answer
    x = 169,867.62

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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.