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Finding the Fourth Proportional to 18,936.59, 28,410.14 and 16,870.88

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Solution

The fourth proportional to 18,936.59, 28,410.14 and 16,870.88 is: 25,311.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.59 : 28,410.14 = 16,870.88 : x
  2. Step 2: Convert to fraction form
    18,936.59/28,410.14 = 16,870.88/x
  3. Step 3: Cross multiply
    18,936.59x = 28,410.14 × 16,870.88
  4. Step 4: Simplify right side
    18,936.59x = 479,304,175.93
  5. Step 5: Solve for x
    x = 479,304,175.93/18,936.59
  6. Step 6: Final answer
    x = 25,311.01

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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.