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Finding the Fourth Proportional to 392,298.36, 588,447.55 and 111,808.32

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Solution

The fourth proportional to 392,298.36, 588,447.55 and 111,808.32 is: 167,712.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,298.36 : 588,447.55 = 111,808.32 : x
  2. Step 2: Convert to fraction form
    392,298.36/588,447.55 = 111,808.32/x
  3. Step 3: Cross multiply
    392,298.36x = 588,447.55 × 111,808.32
  4. Step 4: Simplify right side
    392,298.36x = 65,793,331,694.10
  5. Step 5: Solve for x
    x = 65,793,331,694.10/392,298.36
  6. Step 6: Final answer
    x = 167,712.48

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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.