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Finding the Fourth Proportional to 18,438.56, 27,658.00 and 5,958.58

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Solution

The fourth proportional to 18,438.56, 27,658.00 and 5,958.58 is: 8,937.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.56 : 27,658.00 = 5,958.58 : x
  2. Step 2: Convert to fraction form
    18,438.56/27,658.00 = 5,958.58/x
  3. Step 3: Cross multiply
    18,438.56x = 27,658.00 × 5,958.58
  4. Step 4: Simplify right side
    18,438.56x = 164,802,390.74
  5. Step 5: Solve for x
    x = 164,802,390.74/18,438.56
  6. Step 6: Final answer
    x = 8,937.92

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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.