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Finding the Fourth Proportional to 14,324.21, 19,767.61 and 7,951.21

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Solution

The fourth proportional to 14,324.21, 19,767.61 and 7,951.21 is: 10,972.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,324.21 : 19,767.61 = 7,951.21 : x
  2. Step 2: Convert to fraction form
    14,324.21/19,767.61 = 7,951.21/x
  3. Step 3: Cross multiply
    14,324.21x = 19,767.61 × 7,951.21
  4. Step 4: Simplify right side
    14,324.21x = 157,176,490.02
  5. Step 5: Solve for x
    x = 157,176,490.02/14,324.21
  6. Step 6: Final answer
    x = 10,972.79

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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.