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Finding the Fourth Proportional to 392,969.75, 588,961.71 and 168,066.18

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Solution

The fourth proportional to 392,969.75, 588,961.71 and 168,066.18 is: 251,888.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,969.75 : 588,961.71 = 168,066.18 : x
  2. Step 2: Convert to fraction form
    392,969.75/588,961.71 = 168,066.18/x
  3. Step 3: Cross multiply
    392,969.75x = 588,961.71 × 168,066.18
  4. Step 4: Simplify right side
    392,969.75x = 98,984,544,765.97
  5. Step 5: Solve for x
    x = 98,984,544,765.97/392,969.75
  6. Step 6: Final answer
    x = 251,888.46

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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.