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Finding the Fourth Proportional to 8,696.92, 13,041.54 and 5,409.88

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Solution

The fourth proportional to 8,696.92, 13,041.54 and 5,409.88 is: 8,112.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,696.92 : 13,041.54 = 5,409.88 : x
  2. Step 2: Convert to fraction form
    8,696.92/13,041.54 = 5,409.88/x
  3. Step 3: Cross multiply
    8,696.92x = 13,041.54 × 5,409.88
  4. Step 4: Simplify right side
    8,696.92x = 70,553,166.42
  5. Step 5: Solve for x
    x = 70,553,166.42/8,696.92
  6. Step 6: Final answer
    x = 8,112.43

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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.