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Finding the Fourth Proportional to 393,820.38, 590,276.16 and 168,846.12

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Solution

The fourth proportional to 393,820.38, 590,276.16 and 168,846.12 is: 253,074.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,820.38 : 590,276.16 = 168,846.12 : x
  2. Step 2: Convert to fraction form
    393,820.38/590,276.16 = 168,846.12/x
  3. Step 3: Cross multiply
    393,820.38x = 590,276.16 × 168,846.12
  4. Step 4: Simplify right side
    393,820.38x = 99,665,839,344.50
  5. Step 5: Solve for x
    x = 99,665,839,344.50/393,820.38
  6. Step 6: Final answer
    x = 253,074.36

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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.