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Finding the Fourth Proportional to 12,366.54, 17,055.92 and 10,871.28

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Solution

The fourth proportional to 12,366.54, 17,055.92 and 10,871.28 is: 14,993.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,366.54 : 17,055.92 = 10,871.28 : x
  2. Step 2: Convert to fraction form
    12,366.54/17,055.92 = 10,871.28/x
  3. Step 3: Cross multiply
    12,366.54x = 17,055.92 × 10,871.28
  4. Step 4: Simplify right side
    12,366.54x = 185,419,681.98
  5. Step 5: Solve for x
    x = 185,419,681.98/12,366.54
  6. Step 6: Final answer
    x = 14,993.66

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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.