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Finding the Fourth Proportional to 16,461.76, 22,716.81 and 9,387.76

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Solution

The fourth proportional to 16,461.76, 22,716.81 and 9,387.76 is: 12,954.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,461.76 : 22,716.81 = 9,387.76 : x
  2. Step 2: Convert to fraction form
    16,461.76/22,716.81 = 9,387.76/x
  3. Step 3: Cross multiply
    16,461.76x = 22,716.81 × 9,387.76
  4. Step 4: Simplify right side
    16,461.76x = 213,259,960.25
  5. Step 5: Solve for x
    x = 213,259,960.25/16,461.76
  6. Step 6: Final answer
    x = 12,954.87

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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.