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Finding the Fourth Proportional to 11,718.63, 17,578.01 and 4,793.13

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Solution

The fourth proportional to 11,718.63, 17,578.01 and 4,793.13 is: 7,189.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,718.63 : 17,578.01 = 4,793.13 : x
  2. Step 2: Convert to fraction form
    11,718.63/17,578.01 = 4,793.13/x
  3. Step 3: Cross multiply
    11,718.63x = 17,578.01 × 4,793.13
  4. Step 4: Simplify right side
    11,718.63x = 84,253,663.11
  5. Step 5: Solve for x
    x = 84,253,663.11/11,718.63
  6. Step 6: Final answer
    x = 7,189.72

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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.