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Finding the Fourth Proportional to 279,732.57, 386,173.91 and 189,564.93

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Solution

The fourth proportional to 279,732.57, 386,173.91 and 189,564.93 is: 261,696.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,732.57 : 386,173.91 = 189,564.93 : x
  2. Step 2: Convert to fraction form
    279,732.57/386,173.91 = 189,564.93/x
  3. Step 3: Cross multiply
    279,732.57x = 386,173.91 × 189,564.93
  4. Step 4: Simplify right side
    279,732.57x = 73,205,029,269.15
  5. Step 5: Solve for x
    x = 73,205,029,269.15/279,732.57
  6. Step 6: Final answer
    x = 261,696.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.