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Finding the Fourth Proportional to 16,459.80, 24,689.70 and 13,179.30

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Solution

The fourth proportional to 16,459.80, 24,689.70 and 13,179.30 is: 19,768.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,459.80 : 24,689.70 = 13,179.30 : x
  2. Step 2: Convert to fraction form
    16,459.80/24,689.70 = 13,179.30/x
  3. Step 3: Cross multiply
    16,459.80x = 24,689.70 × 13,179.30
  4. Step 4: Simplify right side
    16,459.80x = 325,392,963.21
  5. Step 5: Solve for x
    x = 325,392,963.21/16,459.80
  6. Step 6: Final answer
    x = 19,768.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.