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Finding the Fourth Proportional to 14,606.80, 21,910.20 and 12,176.80

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Solution

The fourth proportional to 14,606.80, 21,910.20 and 12,176.80 is: 18,265.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,606.80 : 21,910.20 = 12,176.80 : x
  2. Step 2: Convert to fraction form
    14,606.80/21,910.20 = 12,176.80/x
  3. Step 3: Cross multiply
    14,606.80x = 21,910.20 × 12,176.80
  4. Step 4: Simplify right side
    14,606.80x = 266,796,123.36
  5. Step 5: Solve for x
    x = 266,796,123.36/14,606.80
  6. Step 6: Final answer
    x = 18,265.20

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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.