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Finding the Fourth Proportional to 13,043.73, 18,008.16 and 8,574.96

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Solution

The fourth proportional to 13,043.73, 18,008.16 and 8,574.96 is: 11,838.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,043.73 : 18,008.16 = 8,574.96 : x
  2. Step 2: Convert to fraction form
    13,043.73/18,008.16 = 8,574.96/x
  3. Step 3: Cross multiply
    13,043.73x = 18,008.16 × 8,574.96
  4. Step 4: Simplify right side
    13,043.73x = 154,419,251.67
  5. Step 5: Solve for x
    x = 154,419,251.67/13,043.73
  6. Step 6: Final answer
    x = 11,838.58

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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.