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Finding the Fourth Proportional to 18,406.28, 27,612.02 and 5,923.40

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Solution

The fourth proportional to 18,406.28, 27,612.02 and 5,923.40 is: 8,885.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,406.28 : 27,612.02 = 5,923.40 : x
  2. Step 2: Convert to fraction form
    18,406.28/27,612.02 = 5,923.40/x
  3. Step 3: Cross multiply
    18,406.28x = 27,612.02 × 5,923.40
  4. Step 4: Simplify right side
    18,406.28x = 163,556,871.59
  5. Step 5: Solve for x
    x = 163,556,871.59/18,406.28
  6. Step 6: Final answer
    x = 8,885.93

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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.