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Finding the Fourth Proportional to 191,691.77, 287,537.60 and 51,450.39

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Solution

The fourth proportional to 191,691.77, 287,537.60 and 51,450.39 is: 77,175.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,691.77 : 287,537.60 = 51,450.39 : x
  2. Step 2: Convert to fraction form
    191,691.77/287,537.60 = 51,450.39/x
  3. Step 3: Cross multiply
    191,691.77x = 287,537.60 × 51,450.39
  4. Step 4: Simplify right side
    191,691.77x = 14,793,921,402.41
  5. Step 5: Solve for x
    x = 14,793,921,402.41/191,691.77
  6. Step 6: Final answer
    x = 77,175.57

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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.