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Finding the Fourth Proportional to 191,958.20, 288,023.70 and 92,079.80

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Solution

The fourth proportional to 191,958.20, 288,023.70 and 92,079.80 is: 138,161.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,958.20 : 288,023.70 = 92,079.80 : x
  2. Step 2: Convert to fraction form
    191,958.20/288,023.70 = 92,079.80/x
  3. Step 3: Cross multiply
    191,958.20x = 288,023.70 × 92,079.80
  4. Step 4: Simplify right side
    191,958.20x = 26,521,164,691.26
  5. Step 5: Solve for x
    x = 26,521,164,691.26/191,958.20
  6. Step 6: Final answer
    x = 138,161.14

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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.