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Finding the Fourth Proportional to 19,860.63, 29,790 and 6,713.52

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Solution

The fourth proportional to 19,860.63, 29,790 and 6,713.52 is: 10,069.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.63 : 29,790 = 6,713.52 : x
  2. Step 2: Convert to fraction form
    19,860.63/29,790 = 6,713.52/x
  3. Step 3: Cross multiply
    19,860.63x = 29,790 × 6,713.52
  4. Step 4: Simplify right side
    19,860.63x = 199,995,760.80
  5. Step 5: Solve for x
    x = 199,995,760.80/19,860.63
  6. Step 6: Final answer
    x = 10,069.96

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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.