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Finding the Fourth Proportional to 191,763.58, 287,774.97 and 67,105.66

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Solution

The fourth proportional to 191,763.58, 287,774.97 and 67,105.66 is: 100,703.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,763.58 : 287,774.97 = 67,105.66 : x
  2. Step 2: Convert to fraction form
    191,763.58/287,774.97 = 67,105.66/x
  3. Step 3: Cross multiply
    191,763.58x = 287,774.97 × 67,105.66
  4. Step 4: Simplify right side
    191,763.58x = 19,311,329,293.33
  5. Step 5: Solve for x
    x = 19,311,329,293.33/191,763.58
  6. Step 6: Final answer
    x = 100,703.84

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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.