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Finding the Fourth Proportional to 392,969.28, 588,957.60 and 168,062.40

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Solution

The fourth proportional to 392,969.28, 588,957.60 and 168,062.40 is: 251,881.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,969.28 : 588,957.60 = 168,062.40 : x
  2. Step 2: Convert to fraction form
    392,969.28/588,957.60 = 168,062.40/x
  3. Step 3: Cross multiply
    392,969.28x = 588,957.60 × 168,062.40
  4. Step 4: Simplify right side
    392,969.28x = 98,981,627,754.24
  5. Step 5: Solve for x
    x = 98,981,627,754.24/392,969.28
  6. Step 6: Final answer
    x = 251,881.34

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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.