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Finding the Fourth Proportional to 18,495.72, 27,730.78 and 6,809.32

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Solution

The fourth proportional to 18,495.72, 27,730.78 and 6,809.32 is: 10,209.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,495.72 : 27,730.78 = 6,809.32 : x
  2. Step 2: Convert to fraction form
    18,495.72/27,730.78 = 6,809.32/x
  3. Step 3: Cross multiply
    18,495.72x = 27,730.78 × 6,809.32
  4. Step 4: Simplify right side
    18,495.72x = 188,827,754.87
  5. Step 5: Solve for x
    x = 188,827,754.87/18,495.72
  6. Step 6: Final answer
    x = 10,209.27

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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.