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Finding the Fourth Proportional to 18,346.80, 27,520.20 and 4,495.80

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Solution

The fourth proportional to 18,346.80, 27,520.20 and 4,495.80 is: 6,743.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,346.80 : 27,520.20 = 4,495.80 : x
  2. Step 2: Convert to fraction form
    18,346.80/27,520.20 = 4,495.80/x
  3. Step 3: Cross multiply
    18,346.80x = 27,520.20 × 4,495.80
  4. Step 4: Simplify right side
    18,346.80x = 123,725,315.16
  5. Step 5: Solve for x
    x = 123,725,315.16/18,346.80
  6. Step 6: Final answer
    x = 6,743.70

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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.