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Finding the Fourth Proportional to 15,769.72, 21,753.93 and 9,394.48

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Solution

The fourth proportional to 15,769.72, 21,753.93 and 9,394.48 is: 12,959.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.72 : 21,753.93 = 9,394.48 : x
  2. Step 2: Convert to fraction form
    15,769.72/21,753.93 = 9,394.48/x
  3. Step 3: Cross multiply
    15,769.72x = 21,753.93 × 9,394.48
  4. Step 4: Simplify right side
    15,769.72x = 204,366,860.31
  5. Step 5: Solve for x
    x = 204,366,860.31/15,769.72
  6. Step 6: Final answer
    x = 12,959.45

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.