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Finding the Fourth Proportional to 18,792.88, 25,935.02 and 10,409.36

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Solution

The fourth proportional to 18,792.88, 25,935.02 and 10,409.36 is: 14,365.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.88 : 25,935.02 = 10,409.36 : x
  2. Step 2: Convert to fraction form
    18,792.88/25,935.02 = 10,409.36/x
  3. Step 3: Cross multiply
    18,792.88x = 25,935.02 × 10,409.36
  4. Step 4: Simplify right side
    18,792.88x = 269,966,959.79
  5. Step 5: Solve for x
    x = 269,966,959.79/18,792.88
  6. Step 6: Final answer
    x = 14,365.39

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Why These Related Problems?

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