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Finding the Fourth Proportional to 191,968.20, 288,081.90 and 125,245.80

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Solution

The fourth proportional to 191,968.20, 288,081.90 and 125,245.80 is: 187,953.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,968.20 : 288,081.90 = 125,245.80 : x
  2. Step 2: Convert to fraction form
    191,968.20/288,081.90 = 125,245.80/x
  3. Step 3: Cross multiply
    191,968.20x = 288,081.90 × 125,245.80
  4. Step 4: Simplify right side
    191,968.20x = 36,081,048,031.02
  5. Step 5: Solve for x
    x = 36,081,048,031.02/191,968.20
  6. Step 6: Final answer
    x = 187,953.25

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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.