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Finding the Fourth Proportional to 191,694.12, 287,669.16 and 67,035.12

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Solution

The fourth proportional to 191,694.12, 287,669.16 and 67,035.12 is: 100,597.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,694.12 : 287,669.16 = 67,035.12 : x
  2. Step 2: Convert to fraction form
    191,694.12/287,669.16 = 67,035.12/x
  3. Step 3: Cross multiply
    191,694.12x = 287,669.16 × 67,035.12
  4. Step 4: Simplify right side
    191,694.12x = 19,283,936,660.90
  5. Step 5: Solve for x
    x = 19,283,936,660.90/191,694.12
  6. Step 6: Final answer
    x = 100,597.43

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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.