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Finding the Fourth Proportional to 8,974.38, 12,384.49 and 4,995.38

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Solution

The fourth proportional to 8,974.38, 12,384.49 and 4,995.38 is: 6,893.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,974.38 : 12,384.49 = 4,995.38 : x
  2. Step 2: Convert to fraction form
    8,974.38/12,384.49 = 4,995.38/x
  3. Step 3: Cross multiply
    8,974.38x = 12,384.49 × 4,995.38
  4. Step 4: Simplify right side
    8,974.38x = 61,865,233.66
  5. Step 5: Solve for x
    x = 61,865,233.66/8,974.38
  6. Step 6: Final answer
    x = 6,893.54

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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.