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Finding the Fourth Proportional to 191,434.78, 287,183.27 and 65,086.30

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Solution

The fourth proportional to 191,434.78, 287,183.27 and 65,086.30 is: 97,640.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,434.78 : 287,183.27 = 65,086.30 : x
  2. Step 2: Convert to fraction form
    191,434.78/287,183.27 = 65,086.30/x
  3. Step 3: Cross multiply
    191,434.78x = 287,183.27 × 65,086.30
  4. Step 4: Simplify right side
    191,434.78x = 18,691,696,466.20
  5. Step 5: Solve for x
    x = 18,691,696,466.20/191,434.78
  6. Step 6: Final answer
    x = 97,640.02

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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.