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Finding the Fourth Proportional to 191,854.80, 287,618.11 and 73,611

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Solution

The fourth proportional to 191,854.80, 287,618.11 and 73,611 is: 110,353.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,854.80 : 287,618.11 = 73,611 : x
  2. Step 2: Convert to fraction form
    191,854.80/287,618.11 = 73,611/x
  3. Step 3: Cross multiply
    191,854.80x = 287,618.11 × 73,611
  4. Step 4: Simplify right side
    191,854.80x = 21,171,856,511.18
  5. Step 5: Solve for x
    x = 21,171,856,511.18/191,854.80
  6. Step 6: Final answer
    x = 110,353.54

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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.