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Finding the Fourth Proportional to 10,658.40, 15,992.20 and 5,722.27

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Solution

The fourth proportional to 10,658.40, 15,992.20 and 5,722.27 is: 8,585.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,658.40 : 15,992.20 = 5,722.27 : x
  2. Step 2: Convert to fraction form
    10,658.40/15,992.20 = 5,722.27/x
  3. Step 3: Cross multiply
    10,658.40x = 15,992.20 × 5,722.27
  4. Step 4: Simplify right side
    10,658.40x = 91,511,686.29
  5. Step 5: Solve for x
    x = 91,511,686.29/10,658.40
  6. Step 6: Final answer
    x = 8,585.87

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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.