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Finding the Fourth Proportional to 10,955.42, 16,440.11 and 3,935.28

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Solution

The fourth proportional to 10,955.42, 16,440.11 and 3,935.28 is: 5,905.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.42 : 16,440.11 = 3,935.28 : x
  2. Step 2: Convert to fraction form
    10,955.42/16,440.11 = 3,935.28/x
  3. Step 3: Cross multiply
    10,955.42x = 16,440.11 × 3,935.28
  4. Step 4: Simplify right side
    10,955.42x = 64,696,436.08
  5. Step 5: Solve for x
    x = 64,696,436.08/10,955.42
  6. Step 6: Final answer
    x = 5,905.43

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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.