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Finding the Fourth Proportional to 17,089.80, 25,634.70 and 14,209.80

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Solution

The fourth proportional to 17,089.80, 25,634.70 and 14,209.80 is: 21,314.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,089.80 : 25,634.70 = 14,209.80 : x
  2. Step 2: Convert to fraction form
    17,089.80/25,634.70 = 14,209.80/x
  3. Step 3: Cross multiply
    17,089.80x = 25,634.70 × 14,209.80
  4. Step 4: Simplify right side
    17,089.80x = 364,263,960.06
  5. Step 5: Solve for x
    x = 364,263,960.06/17,089.80
  6. Step 6: Final answer
    x = 21,314.70

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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.