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Finding the Fourth Proportional to 191,446.63, 287,189.58 and 73,217.41

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Solution

The fourth proportional to 191,446.63, 287,189.58 and 73,217.41 is: 109,833.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,446.63 : 287,189.58 = 73,217.41 : x
  2. Step 2: Convert to fraction form
    191,446.63/287,189.58 = 73,217.41/x
  3. Step 3: Cross multiply
    191,446.63x = 287,189.58 × 73,217.41
  4. Step 4: Simplify right side
    191,446.63x = 21,027,276,783.18
  5. Step 5: Solve for x
    x = 21,027,276,783.18/191,446.63
  6. Step 6: Final answer
    x = 109,833.62

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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.