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Finding the Fourth Proportional to 18,654.78, 25,745.82 and 10,696.98

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Solution

The fourth proportional to 18,654.78, 25,745.82 and 10,696.98 is: 14,763.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,654.78 : 25,745.82 = 10,696.98 : x
  2. Step 2: Convert to fraction form
    18,654.78/25,745.82 = 10,696.98/x
  3. Step 3: Cross multiply
    18,654.78x = 25,745.82 × 10,696.98
  4. Step 4: Simplify right side
    18,654.78x = 275,402,521.62
  5. Step 5: Solve for x
    x = 275,402,521.62/18,654.78
  6. Step 6: Final answer
    x = 14,763.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.