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Finding the Fourth Proportional to 8,951.78, 12,354.59 and 5,414.99

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Solution

The fourth proportional to 8,951.78, 12,354.59 and 5,414.99 is: 7,473.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,951.78 : 12,354.59 = 5,414.99 : x
  2. Step 2: Convert to fraction form
    8,951.78/12,354.59 = 5,414.99/x
  3. Step 3: Cross multiply
    8,951.78x = 12,354.59 × 5,414.99
  4. Step 4: Simplify right side
    8,951.78x = 66,899,933.07
  5. Step 5: Solve for x
    x = 66,899,933.07/8,951.78
  6. Step 6: Final answer
    x = 7,473.36

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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.