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Finding the Fourth Proportional to 11,762.65, 16,229.67 and 6,658.23

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Solution

The fourth proportional to 11,762.65, 16,229.67 and 6,658.23 is: 9,186.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,762.65 : 16,229.67 = 6,658.23 : x
  2. Step 2: Convert to fraction form
    11,762.65/16,229.67 = 6,658.23/x
  3. Step 3: Cross multiply
    11,762.65x = 16,229.67 × 6,658.23
  4. Step 4: Simplify right side
    11,762.65x = 108,060,911.58
  5. Step 5: Solve for x
    x = 108,060,911.58/11,762.65
  6. Step 6: Final answer
    x = 9,186.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.