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Finding the Fourth Proportional to 18,334.80, 27,495.23 and 7,809.80

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Solution

The fourth proportional to 18,334.80, 27,495.23 and 7,809.80 is: 11,711.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,334.80 : 27,495.23 = 7,809.80 : x
  2. Step 2: Convert to fraction form
    18,334.80/27,495.23 = 7,809.80/x
  3. Step 3: Cross multiply
    18,334.80x = 27,495.23 × 7,809.80
  4. Step 4: Simplify right side
    18,334.80x = 214,732,070.73
  5. Step 5: Solve for x
    x = 214,732,070.73/18,334.80
  6. Step 6: Final answer
    x = 11,711.72

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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.