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Finding the Fourth Proportional to 191,486.38, 287,229.90 and 79,043.14

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Solution

The fourth proportional to 191,486.38, 287,229.90 and 79,043.14 is: 118,564.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,486.38 : 287,229.90 = 79,043.14 : x
  2. Step 2: Convert to fraction form
    191,486.38/287,229.90 = 79,043.14/x
  3. Step 3: Cross multiply
    191,486.38x = 287,229.90 × 79,043.14
  4. Step 4: Simplify right side
    191,486.38x = 22,703,553,197.89
  5. Step 5: Solve for x
    x = 22,703,553,197.89/191,486.38
  6. Step 6: Final answer
    x = 118,564.85

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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.