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Finding the Fourth Proportional to 19,808.67, 29,694.40 and 6,651.82

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Solution

The fourth proportional to 19,808.67, 29,694.40 and 6,651.82 is: 9,971.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,808.67 : 29,694.40 = 6,651.82 : x
  2. Step 2: Convert to fraction form
    19,808.67/29,694.40 = 6,651.82/x
  3. Step 3: Cross multiply
    19,808.67x = 29,694.40 × 6,651.82
  4. Step 4: Simplify right side
    19,808.67x = 197,521,638.71
  5. Step 5: Solve for x
    x = 197,521,638.71/19,808.67
  6. Step 6: Final answer
    x = 9,971.47

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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.