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Finding the Fourth Proportional to 191,511.68, 287,221.37 and 84,836.65

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Solution

The fourth proportional to 191,511.68, 287,221.37 and 84,836.65 is: 127,234.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,511.68 : 287,221.37 = 84,836.65 : x
  2. Step 2: Convert to fraction form
    191,511.68/287,221.37 = 84,836.65/x
  3. Step 3: Cross multiply
    191,511.68x = 287,221.37 × 84,836.65
  4. Step 4: Simplify right side
    191,511.68x = 24,366,898,839.21
  5. Step 5: Solve for x
    x = 24,366,898,839.21/191,511.68
  6. Step 6: Final answer
    x = 127,234.53

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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.