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Finding the Fourth Proportional to 192,959.61, 289,538.25 and 91,872.06

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Solution

The fourth proportional to 192,959.61, 289,538.25 and 91,872.06 is: 137,855.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,959.61 : 289,538.25 = 91,872.06 : x
  2. Step 2: Convert to fraction form
    192,959.61/289,538.25 = 91,872.06/x
  3. Step 3: Cross multiply
    192,959.61x = 289,538.25 × 91,872.06
  4. Step 4: Simplify right side
    192,959.61x = 26,600,475,476.30
  5. Step 5: Solve for x
    x = 26,600,475,476.30/192,959.61
  6. Step 6: Final answer
    x = 137,855.15

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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.