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Finding the Fourth Proportional to 11,959.74, 17,940.96 and 4,565.79

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Solution

The fourth proportional to 11,959.74, 17,940.96 and 4,565.79 is: 6,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,959.74 : 17,940.96 = 4,565.79 : x
  2. Step 2: Convert to fraction form
    11,959.74/17,940.96 = 4,565.79/x
  3. Step 3: Cross multiply
    11,959.74x = 17,940.96 × 4,565.79
  4. Step 4: Simplify right side
    11,959.74x = 81,914,655.76
  5. Step 5: Solve for x
    x = 81,914,655.76/11,959.74
  6. Step 6: Final answer
    x = 6,849.20

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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.