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Finding the Fourth Proportional to 191,896.92, 287,776.26 and 81,097.56

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Solution

The fourth proportional to 191,896.92, 287,776.26 and 81,097.56 is: 121,617.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,896.92 : 287,776.26 = 81,097.56 : x
  2. Step 2: Convert to fraction form
    191,896.92/287,776.26 = 81,097.56/x
  3. Step 3: Cross multiply
    191,896.92x = 287,776.26 × 81,097.56
  4. Step 4: Simplify right side
    191,896.92x = 23,337,952,511.93
  5. Step 5: Solve for x
    x = 23,337,952,511.93/191,896.92
  6. Step 6: Final answer
    x = 121,617.13

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1.5x scale

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.