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Finding the Fourth Proportional to 18,476.92, 27,708.90 and 5,325.76

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Solution

The fourth proportional to 18,476.92, 27,708.90 and 5,325.76 is: 7,986.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,476.92 : 27,708.90 = 5,325.76 : x
  2. Step 2: Convert to fraction form
    18,476.92/27,708.90 = 5,325.76/x
  3. Step 3: Cross multiply
    18,476.92x = 27,708.90 × 5,325.76
  4. Step 4: Simplify right side
    18,476.92x = 147,570,951.26
  5. Step 5: Solve for x
    x = 147,570,951.26/18,476.92
  6. Step 6: Final answer
    x = 7,986.77

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1.5x scale

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.