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Finding the Fourth Proportional to 7,805.56, 11,724.66 and 6,635.38

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Solution

The fourth proportional to 7,805.56, 11,724.66 and 6,635.38 is: 9,966.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,805.56 : 11,724.66 = 6,635.38 : x
  2. Step 2: Convert to fraction form
    7,805.56/11,724.66 = 6,635.38/x
  3. Step 3: Cross multiply
    7,805.56x = 11,724.66 × 6,635.38
  4. Step 4: Simplify right side
    7,805.56x = 77,797,574.47
  5. Step 5: Solve for x
    x = 77,797,574.47/7,805.56
  6. Step 6: Final answer
    x = 9,966.94

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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.