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Finding the Fourth Proportional to 19,752.87, 29,630.88 and 6,605.31

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Solution

The fourth proportional to 19,752.87, 29,630.88 and 6,605.31 is: 9,908.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,752.87 : 29,630.88 = 6,605.31 : x
  2. Step 2: Convert to fraction form
    19,752.87/29,630.88 = 6,605.31/x
  3. Step 3: Cross multiply
    19,752.87x = 29,630.88 × 6,605.31
  4. Step 4: Simplify right side
    19,752.87x = 195,721,147.97
  5. Step 5: Solve for x
    x = 195,721,147.97/19,752.87
  6. Step 6: Final answer
    x = 9,908.49

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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.