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Finding the Fourth Proportional to 14,347.81, 19,800.17 and 8,682.49

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Solution

The fourth proportional to 14,347.81, 19,800.17 and 8,682.49 is: 11,981.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,347.81 : 19,800.17 = 8,682.49 : x
  2. Step 2: Convert to fraction form
    14,347.81/19,800.17 = 8,682.49/x
  3. Step 3: Cross multiply
    14,347.81x = 19,800.17 × 8,682.49
  4. Step 4: Simplify right side
    14,347.81x = 171,914,778.02
  5. Step 5: Solve for x
    x = 171,914,778.02/14,347.81
  6. Step 6: Final answer
    x = 11,981.95

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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.