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Finding the Fourth Proportional to 191,591.49, 287,387.21 and 58,472.43

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Solution

The fourth proportional to 191,591.49, 287,387.21 and 58,472.43 is: 87,708.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,591.49 : 287,387.21 = 58,472.43 : x
  2. Step 2: Convert to fraction form
    191,591.49/287,387.21 = 58,472.43/x
  3. Step 3: Cross multiply
    191,591.49x = 287,387.21 × 58,472.43
  4. Step 4: Simplify right side
    191,591.49x = 16,804,228,227.26
  5. Step 5: Solve for x
    x = 16,804,228,227.26/191,591.49
  6. Step 6: Final answer
    x = 87,708.64

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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.