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Finding the Fourth Proportional to 14,673.81, 20,249.79 and 7,959.41

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Solution

The fourth proportional to 14,673.81, 20,249.79 and 7,959.41 is: 10,983.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,673.81 : 20,249.79 = 7,959.41 : x
  2. Step 2: Convert to fraction form
    14,673.81/20,249.79 = 7,959.41/x
  3. Step 3: Cross multiply
    14,673.81x = 20,249.79 × 7,959.41
  4. Step 4: Simplify right side
    14,673.81x = 161,176,381.02
  5. Step 5: Solve for x
    x = 161,176,381.02/14,673.81
  6. Step 6: Final answer
    x = 10,983.95

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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.