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Finding the Fourth Proportional to 27,320.72, 40,979.23 and 9,791.11

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Solution

The fourth proportional to 27,320.72, 40,979.23 and 9,791.11 is: 14,686.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,320.72 : 40,979.23 = 9,791.11 : x
  2. Step 2: Convert to fraction form
    27,320.72/40,979.23 = 9,791.11/x
  3. Step 3: Cross multiply
    27,320.72x = 40,979.23 × 9,791.11
  4. Step 4: Simplify right side
    27,320.72x = 401,232,148.65
  5. Step 5: Solve for x
    x = 401,232,148.65/27,320.72
  6. Step 6: Final answer
    x = 14,686.00

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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.