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Finding the Fourth Proportional to 55,805.34, 83,711.13 and 17,857.92

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Solution

The fourth proportional to 55,805.34, 83,711.13 and 17,857.92 is: 26,787.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,805.34 : 83,711.13 = 17,857.92 : x
  2. Step 2: Convert to fraction form
    55,805.34/83,711.13 = 17,857.92/x
  3. Step 3: Cross multiply
    55,805.34x = 83,711.13 × 17,857.92
  4. Step 4: Simplify right side
    55,805.34x = 1,494,906,662.65
  5. Step 5: Solve for x
    x = 1,494,906,662.65/55,805.34
  6. Step 6: Final answer
    x = 26,787.88

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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.