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Finding the Fourth Proportional to 192,639.65, 289,017.65 and 57,708.09

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Solution

The fourth proportional to 192,639.65, 289,017.65 and 57,708.09 is: 86,579.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,639.65 : 289,017.65 = 57,708.09 : x
  2. Step 2: Convert to fraction form
    192,639.65/289,017.65 = 57,708.09/x
  3. Step 3: Cross multiply
    192,639.65x = 289,017.65 × 57,708.09
  4. Step 4: Simplify right side
    192,639.65x = 16,678,656,702.06
  5. Step 5: Solve for x
    x = 16,678,656,702.06/192,639.65
  6. Step 6: Final answer
    x = 86,579.57

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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.