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Finding the Fourth Proportional to 18,302.63, 27,443.81 and 10,809.32

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Solution

The fourth proportional to 18,302.63, 27,443.81 and 10,809.32 is: 16,207.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,302.63 : 27,443.81 = 10,809.32 : x
  2. Step 2: Convert to fraction form
    18,302.63/27,443.81 = 10,809.32/x
  3. Step 3: Cross multiply
    18,302.63x = 27,443.81 × 10,809.32
  4. Step 4: Simplify right side
    18,302.63x = 296,648,814.11
  5. Step 5: Solve for x
    x = 296,648,814.11/18,302.63
  6. Step 6: Final answer
    x = 16,207.99

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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.