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Finding the Fourth Proportional to 19,294.26, 28,941.99 and 6,643.88

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Solution

The fourth proportional to 19,294.26, 28,941.99 and 6,643.88 is: 9,966.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,294.26 : 28,941.99 = 6,643.88 : x
  2. Step 2: Convert to fraction form
    19,294.26/28,941.99 = 6,643.88/x
  3. Step 3: Cross multiply
    19,294.26x = 28,941.99 × 6,643.88
  4. Step 4: Simplify right side
    19,294.26x = 192,287,108.52
  5. Step 5: Solve for x
    x = 192,287,108.52/19,294.26
  6. Step 6: Final answer
    x = 9,966.03

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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.