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Finding the Fourth Proportional to 19,806.68, 27,332.28 and 11,853.28

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Solution

The fourth proportional to 19,806.68, 27,332.28 and 11,853.28 is: 16,356.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,806.68 : 27,332.28 = 11,853.28 : x
  2. Step 2: Convert to fraction form
    19,806.68/27,332.28 = 11,853.28/x
  3. Step 3: Cross multiply
    19,806.68x = 27,332.28 × 11,853.28
  4. Step 4: Simplify right side
    19,806.68x = 323,977,167.88
  5. Step 5: Solve for x
    x = 323,977,167.88/19,806.68
  6. Step 6: Final answer
    x = 16,356.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.