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Finding the Fourth Proportional to 14,626.98, 20,189.25 and 8,658.90

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Solution

The fourth proportional to 14,626.98, 20,189.25 and 8,658.90 is: 11,951.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,626.98 : 20,189.25 = 8,658.90 : x
  2. Step 2: Convert to fraction form
    14,626.98/20,189.25 = 8,658.90/x
  3. Step 3: Cross multiply
    14,626.98x = 20,189.25 × 8,658.90
  4. Step 4: Simplify right side
    14,626.98x = 174,816,696.83
  5. Step 5: Solve for x
    x = 174,816,696.83/14,626.98
  6. Step 6: Final answer
    x = 11,951.66

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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.