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Finding the Fourth Proportional to 192,705.68, 289,057.61 and 86,062.10

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Solution

The fourth proportional to 192,705.68, 289,057.61 and 86,062.10 is: 129,092.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,705.68 : 289,057.61 = 86,062.10 : x
  2. Step 2: Convert to fraction form
    192,705.68/289,057.61 = 86,062.10/x
  3. Step 3: Cross multiply
    192,705.68x = 289,057.61 × 86,062.10
  4. Step 4: Simplify right side
    192,705.68x = 24,876,903,707.45
  5. Step 5: Solve for x
    x = 24,876,903,707.45/192,705.68
  6. Step 6: Final answer
    x = 129,092.74

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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.