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Finding the Fourth Proportional to 62,642.78, 93,955.05 and 18,257.61

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Solution

The fourth proportional to 62,642.78, 93,955.05 and 18,257.61 is: 27,383.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,642.78 : 93,955.05 = 18,257.61 : x
  2. Step 2: Convert to fraction form
    62,642.78/93,955.05 = 18,257.61/x
  3. Step 3: Cross multiply
    62,642.78x = 93,955.05 × 18,257.61
  4. Step 4: Simplify right side
    62,642.78x = 1,715,394,569.14
  5. Step 5: Solve for x
    x = 1,715,394,569.14/62,642.78
  6. Step 6: Final answer
    x = 27,383.76

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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.