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Finding the Fourth Proportional to 192,007.20, 287,665.20 and 164,359.20

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Solution

The fourth proportional to 192,007.20, 287,665.20 and 164,359.20 is: 246,242.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,007.20 : 287,665.20 = 164,359.20 : x
  2. Step 2: Convert to fraction form
    192,007.20/287,665.20 = 164,359.20/x
  3. Step 3: Cross multiply
    192,007.20x = 287,665.20 × 164,359.20
  4. Step 4: Simplify right side
    192,007.20x = 47,280,422,139.84
  5. Step 5: Solve for x
    x = 47,280,422,139.84/192,007.20
  6. Step 6: Final answer
    x = 246,242.96

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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.