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Finding the Fourth Proportional to 18,590.72, 27,871.49 and 9,224.15

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Solution

The fourth proportional to 18,590.72, 27,871.49 and 9,224.15 is: 13,828.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,590.72 : 27,871.49 = 9,224.15 : x
  2. Step 2: Convert to fraction form
    18,590.72/27,871.49 = 9,224.15/x
  3. Step 3: Cross multiply
    18,590.72x = 27,871.49 × 9,224.15
  4. Step 4: Simplify right side
    18,590.72x = 257,090,619.01
  5. Step 5: Solve for x
    x = 257,090,619.01/18,590.72
  6. Step 6: Final answer
    x = 13,828.98

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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.